Indasa 8" PSA Sanding Discs – Rhynostick Red Line, Sticky-Back, 40–600 Grit (800 Series)

Indasa 8" Rhynostick Red Line PSA Solid Sanding Discs (800 Series) are premium aluminum-oxide PSA (pressure-sensitive adhesive) sticky-back discs sized for 8" sanders and boards to cover large panels fast with a flat, stable cut. Red Line delivers Indasa's highest cut rate and longest life. Available 40–600 grit.

Why pros choose Indasa Red Line

• High initial cut with anti-clog lubricant coating for long life
• Strong PSA adhesive for a secure, chatter-free hold
• Flexible backing for curves and contours
• Uniform scratch pattern for a consistent finish
• Anti-static & dust-repellent for cleaner work

Best applications

• Large-panel body filler, primer and paint prep
• Marine, RV and large-surface refinishing
• Fiberglass, gelcoat, solid surfaces and metals

Grit selection guide

• 40–80: heavy stock removal & filler leveling
• 120–180: filler shaping & primer prep
• 220–400: final prep before topcoat
• 500–600: fine prep & denibbing

Compares to

A premium alternative to 3M Stikit Gold, Mirka Gold PSA, and Norton A275 stick-on abrasives.

Specifications

• Abrasive: premium aluminum oxide  |  Backing: PSA sticky-back (Rhynostick)
• Disc size: 8" solid (no holes)
• Grit range: 40 to 600  |  Series: Indasa 800 Series

Frequently asked questions

What pad do these use?
A smooth 8" PSA (sticky-back) backup pad — not hook & loop. Shop PSA Backup Pads.

PSA vs grip (hook & loop)?
PSA sticks directly to a smooth pad and runs very flat; grip discs peel on and off for quick changes. For the hook & loop version see the 8" Rhynogrip (820).

Red Line vs White Line?
Red Line is the premium, longest-life, highest-cut line; White Line is the everyday line.

Part of the Indasa Red Line series.