Product Overview

The 3M Hookit 180 Grit Blue Abrasive Discs (36146) are high-performance sanding discs designed for fast cutting, long life, and consistent surface prep on metal, filler, and primer. These discs are part of 3M’s premium Blue Abrasive line, formulated with a precision-shaped ceramic blend that maintains sharpness through extended use.

With a 180 grit rating, these discs strike a balance between material removal and surface finish, making them ideal for leveling body filler, refining scratch patterns, or prepping panels for primer and paint. They’re equipped with Hookit backing, which provides secure attachment to 3M Hookit pads and makes disc changes quick and easy.

The multi-hole pattern improves dust extraction, reducing clogging and heat buildup to help the disc last longer and cut more consistently.

Technical Specs

• Brand: 3M
• Model Number: 36146
• Product Type: Hook-and-loop sanding discs
• Grit: 180 (fine)
• Disc Diameter: Typically 6 in. (verify specific size on packaging)
• Abrasive Material: Precision-shaped ceramic blend
• Backing: Hookit (hook-and-loop)
• Hole Pattern: Multi-hole for dust extraction
• Use Case: Auto body sanding, filler shaping, primer prep, feather-edging

What It’s Good For

These discs are ideal for professional body shops and DIYers working on paint prep, rust removal, or filler leveling. The 180 grit is especially suited for smoothing without over-sanding, leaving a surface ready for primer or finer finishing.

Compared to Other Discs

Compared to standard aluminum oxide or paper-backed discs, 3M’s Blue Abrasive line lasts longer, resists clogging, and delivers more consistent performance. The Hookit system also speeds up workflow by allowing easy disc changes between grits.

Also Known As

• 3M 36146 Blue Sanding Discs
• Hookit 180 Grit Body Shop Discs
• 3M Ceramic Blend Abrasive Pads
• 3M Blue Hook-and-Loop Sandpaper Discs