Indasa 6" Rhynogrip Red Line 9-Hole Vacuum Sanding Discs (690 Series) are premium aluminum-oxide hook & loop discs with a 9-hole dust-extraction pattern for clean, dust-free sanding on a vacuum-ready 6" DA sander. Red Line delivers Indasa's highest cut rate and longest life. Available 36–1500 grit.
Why pros choose Indasa Red Line
9-hole dust extraction for a cleaner panel and longer disc life
High initial cut with anti-clog lubricant coating
Flexible backing for curves and contours
Uniform scratch pattern, anti-static and dust-repellent
Nylon hook & loop runs cooler than PSA
Best applications
Body filler, primer, paint and clearcoat prep
Blending and refinishing on contoured panels
Fiberglass, gelcoat, solid surfaces and metals
Grit selection guide
36–80: heavy stock removal & filler leveling
120–180: filler shaping & primer prep
220–400: final prep before topcoat
600–1500: denibbing & fine finishing
Compares to
A premium alternative to 3M Hookit Gold & Purple, Mirka Gold & Q.Silver, and Norton A275 / A975 Dry Ice.
Grit range: 36 to 1500 | Series: Indasa 690 Series
Frequently asked questions
Which backup pad do I need? A 6" 9-hole hook & loop backup pad so the holes line up. Shop Grip Backup Pads.
Which 6-inch Red Line vacuum disc is right for my sander? Match the hole count to your pad/sander: 6-hole (630), 8-hole (640), 9-hole (690) or 17-hole (690-17).
Red Line vs White Line? Red Line is the premium, longest-life, highest-cut line; White Line is the everyday line.
