{"product_id":"plasterking-backer-pad-7-m10-1-25-reverse-thread","title":"PlasterKing Backer Pad 7\" M10-1.25 Reverse Thread","description":"\u003ch2 style=\"color:#231F20; font-size:28px; margin-bottom:18px;\"\u003eAlpha® PlasterKing® Backer Pad — 7\" M10-1.25 Reverse Thread\u003c\/h2\u003e\u003cp style=\"color:#231F20; font-size:15px; line-height:1.7;\"\u003eHook-and-loop backer pad engineered for the Alpha® PlasterKing® pool plaster polishing system. This specially stocked configuration features an M10-1.25 reverse-thread arbor for pneumatic underwater polishers (compatible with the Alpha® AIR-680UW and similar reverse-thread tooling) so the pad stays locked under wet, submerged use. Pairs with the PlasterKing® 7\" #50 and #100 diamond polishing pads (PS070050, PS070100) to deliver a uniform, contractor-grade finish on freshly-cured pool plaster.\u003c\/p\u003e\u003ch4 style=\"color:#F15C22; font-size:18px; margin-top:30px;\"\u003eFeatures\u003c\/h4\u003e\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003e7\" working diameter sized for PlasterKing® PS070050 and PS070100 polishing pads\u003c\/li\u003e\n\u003cli\u003eM10-1.25 reverse-thread arbor — locks under load on pneumatic underwater polishers\u003c\/li\u003e\n\u003cli\u003eHook \u0026amp; loop face for fast pad changes between grits\u003c\/li\u003e\n\u003cli\u003eBuilt for wet pool-plaster polishing — not for dry use\u003c\/li\u003e\n\u003cli\u003eCompatible with PlasterKing® diamond polishing pads and most 7\" hook-and-loop foam, wool, microfiber pads, and sandpaper\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e\n.dst-accordion { margin-top: 25px; border: 1px solid #FDDCC5; border-radius: 6px; overflow: hidden; }\n.dst-accordion-item { border-bottom: 1px solid #FDDCC5; }\n.dst-accordion-item:last-child { border-bottom: none; }\n.dst-accordion-toggle { display: none; }\n.dst-accordion-label { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700; color: #231F20; background: #fff; transition: background 0.2s; }\n.dst-accordion-label:hover { background: #FFF3EB; }\n.dst-accordion-label::after { content: '+'; font-size: 22px; font-weight: 700; color: #F15C22; transition: transform 0.3s; }\n.dst-accordion-toggle:checked + .dst-accordion-label { background: #FFF3EB; }\n.dst-accordion-toggle:checked + .dst-accordion-label::after { content: '\\2212'; }\n.dst-accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 20px; background: #fff; }\n.dst-accordion-toggle:checked ~ .dst-accordion-content { max-height: 5000px; padding: 15px 20px 20px; }\n\u003c\/style\u003e\u003cdiv class=\"dst-accordion\"\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-models\" class=\"dst-accordion-toggle\" checked\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-models\" class=\"dst-accordion-label\"\u003eModels \/ Part Numbers\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003ctable style=\"width:100%; border-collapse:collapse; color:#231F20; font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#FFF8F3;\"\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003ePart No.\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eDiameter\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eThread\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eUse\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left; border-bottom:2px solid #F15C22;\"\u003eUPC\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003ePK710HH\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e7\"\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eM10-1.25 Reverse\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003eBacker for PlasterKing® polishing pads\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #FDDCC5;\"\u003e749173480225\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-howto\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-howto\" class=\"dst-accordion-label\"\u003eHow to Use\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003col style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003eThread the backer pad onto an M10-1.25 reverse-thread polisher (left-hand thread). Snug by hand — the working load tightens the connection.\u003c\/li\u003e\n\u003cli\u003ePress a PlasterKing® #50 (yellow) or #100 (red) hook-and-loop polishing pad squarely onto the face, centered on the backer.\u003c\/li\u003e\n\u003cli\u003eSubmerge or wet the plaster surface. PlasterKing® is wet-use only.\u003c\/li\u003e\n\u003cli\u003ePolish at or below 5,500 RPM with light, even pressure. Let the diamonds do the work.\u003c\/li\u003e\n\u003cli\u003eAfter use, rinse the backer pad and pads with clean water and air-dry away from heat.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-variant-specs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-variant-specs\" class=\"dst-accordion-label\"\u003eSpecifications by Variant\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cdiv style=\"margin-top:18px; padding:14px 16px; border:1px solid #FDDCC5; border-radius:6px; background:#FFF8F3;\"\u003e\n\u003ch5 style=\"margin:0 0 10px 0; color:#F15C22; font-size:16px;\"\u003e7\" — Hook \u0026amp; Loop face — Hook \u0026amp; Loop Backer Pad — PK710HH\u003c\/h5\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; color:#231F20; font-size:14px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003ePart No.\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003ePK710HH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eUPC\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e749173480225\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eHook \u0026amp; Loop Backer Pad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eAttachment\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eHook \u0026amp; Loop face\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eThread\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eM10-1.25 Reverse (left-hand)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eMax RPM\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e5,500 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eRecommended For\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eBacking pad for PlasterKing® 7\" diamond polishing pads (PS070050, PS070100)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px; font-weight:bold; width:40%;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eSee package label\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-common-specs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-common-specs\" class=\"dst-accordion-label\"\u003eCommon Specifications\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%; border-color:#FDDCC5; font-size:14px;\"\u003e\n\u003ctr style=\"background-color:#F15C22; color:#fff;\"\u003e\n\u003cth style=\"padding:8px 12px; text-align:left;\"\u003eProperty\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eWet pool-plaster polishing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eWorking Diameter\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e7 in (178 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eArbor Thread\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eM10 × 1.25 reverse \/ left-hand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003ePad Attachment\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eHook \u0026amp; loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eMax RPM\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e5,500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eRecommended Tools\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eAlpha® AIR-680UW underwater polisher and other M10-1.25 reverse-thread polishers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; width:40%;\"\u003eCompanion Pads\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003ePlasterKing® PS070050 (#50, yellow), PS070100 (#100, red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-related\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-related\" class=\"dst-accordion-label\"\u003eRelated \u0026amp; Companion Products\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8;\"\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/dynamicstonetools.com\/products\/plasterking-polishing-pad-7-grit-50\" target=\"_blank\" style=\"color:#F15C22;\"\u003ePlasterKing® #50 Polishing Pad 7\" (PS070050)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/dynamicstonetools.com\/products\/plasterking-polishing-pad-7-grit-100\" target=\"_blank\" style=\"color:#F15C22;\"\u003ePlasterKing® #100 Polishing Pad 7\" (PS070100)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/dynamicstonetools.com\/search?q=AIR-680UW\" target=\"_blank\" style=\"color:#F15C22;\"\u003eAlpha® AIR-680UW Underwater Pneumatic Polisher\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-faqs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-faqs\" class=\"dst-accordion-label\"\u003eFAQs\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\n\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eWhy a reverse-thread (M10-1.25 left-hand) backer pad?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003ePneumatic underwater polishers such as the Alpha® AIR-680UW use a reverse-thread spindle so the backer pad self-tightens under load while polishing. Using a standard right-hand thread backer on a reverse-thread tool will cause the pad to unthread mid-cut.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eWhich PlasterKing® polishing pads fit this backer?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eBoth Alpha® 7\" PlasterKing® polishing pads — PS070050 (#50, yellow) and PS070100 (#100, red) — attach via the hook-and-loop face.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eCan I use PlasterKing® dry?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eNo. PlasterKing® is wet-use only. All pool contractors polish wet, and dry use will damage the diamond layer and shorten pad life.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eIs this the same as the MP758HL backer pad?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eNo. MP758HL is the Alpha® 5\/8\"-11 (standard right-hand) backer pad for rotary polishers. PK710HH is a specially stocked M10-1.25 reverse-thread variant for pneumatic underwater polishers.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eWhy does Alpha® offer only 2 grits for PlasterKing®?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003ePool contractors typically finish at #100 grit because higher reflective finishes are unnecessary once the pool is filled with water.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px; padding:10px 14px; background:#FFF8F3; border-left:3px solid #F15C22; border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer; font-weight:600; color:#231F20; font-size:14px;\"\u003eIs there seasonality for pool-plaster polishing?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0 0; color:#231F20; font-size:14px;\"\u003eYes. Most pool-polishing work happens before and after pool season, so demand for PlasterKing® and its backer pads peaks in spring and fall.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-videos\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-videos\" class=\"dst-accordion-label\"\u003eVideos\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cp style=\"color:#231F20; font-size:14px;\"\u003e\u003cem\u003eNo product-specific videos are currently available from the manufacturer or DST.\u003c\/em\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dst-accordion-item\"\u003e\n\u003cinput type=\"checkbox\" id=\"acc-plasterking-backer-pad-pk710hh-docs\" class=\"dst-accordion-toggle\"\u003e\u003clabel for=\"acc-plasterking-backer-pad-pk710hh-docs\" class=\"dst-accordion-label\"\u003eDocumentation\u003c\/label\u003e\u003cdiv class=\"dst-accordion-content\"\u003e\u003cul style=\"list-style:none; padding-left:0;\"\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.alpha-tools.com\/Files\/Docs\/Flyers\/PDFs\/Plasterking_flyer.pdf\" target=\"_blank\" style=\"color:#F15C22;\"\u003e📄 PlasterKing® Pads and Backer Pads Flyer\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.alpha-tools.com\/Files\/Docs\/Flyers\/PDFs\/NewFromAlpha2026-Hardscape.pdf\" target=\"_blank\" style=\"color:#F15C22;\"\u003e📄 New From Alpha® 2026 — Hardscape\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cp style=\"margin-top:24px; padding:14px 18px; background:#FFF8F3; border-left:4px solid #F15C22; color:#231F20; font-size:14px;\"\u003e\u003cstrong\u003e⚠ WARNING:\u003c\/strong\u003e Cancer and Reproductive Harm — \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" target=\"_blank\" style=\"color:#F15C22;\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e. Always wear appropriate PPE.\u003c\/p\u003e","brand":"Dynamic Stone Tools","offers":[{"title":"7\"","offer_id":68010714398995,"sku":"PK710HH","price":28.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1006\/8233\/4483\/files\/3280B.jpg?v=1794532112","url":"https:\/\/shopmanu.com\/products\/plasterking-backer-pad-7-m10-1-25-reverse-thread","provider":"Manu","version":"1.0","type":"link"}