3M 7100199259 Hookita 321U Disc 6 Inch 150 Grit

Product Description

The 3M 7100199259 is a Hookita 321U hook-and-loop abrasive disc designed for automotive paint preparation and body repair sanding. The disc uses a blended mineral system that combines ceramic grain with aluminum oxide for consistent cut rate and finish quality across multiple sanding stages. At 6 inches in diameter and 150 grit, it is well-suited for intermediate material removal and surface leveling before finishing coats. A multi-hole pattern supports dust extraction through compatible backup pads, reducing loading and keeping the cutting surface clear during use.

This disc is built for body shop environments where technicians work through multiple stages of paint prep and surface repair. The 150 grit rating positions it for scuff sanding, guide coat removal, and featheredging on automotive substrates. The Hookita attachment system allows fast disc changes without tools, supporting high-volume shop workflows. The multi-hole configuration aligns with most standard backup pads that accept hook-and-loop discs with dust extraction ports.

Key Features

• Blended ceramic and aluminum oxide mineral abrasive for balanced cut and finish
• Anti-loading coating reduces clogging of the cutting surface during use
• Multi-hole disc pattern supports dust extraction and aligns with most backup pads
• Hookita hook-and-loop attachment enables tool-free disc changes
• Upgraded resin bond improves disc durability and consistent finish
• 6 inch diameter, 150 grit — suited for intermediate paint prep and surface leveling

Compatibility

Designed for use with 6 inch hook-and-loop backup pads that feature a compatible multi-hole dust extraction pattern. Hookita attachment is compatible with standard hook-face backup pads used in automotive body shop sanding applications.

Installation Notes

Installation of abrasive discs is performed by body shop technicians and automotive refinishing professionals. Ensure the backup pad surface is clean and free of debris before attaching the disc to achieve full hook-and-loop engagement. Operate at the RPM rating of the backing pad and sander to avoid disc failure. Inspect the disc for tears or loading before each use and replace as needed.

Technical Specifications

• Disc Diameter: 6 inches
• Grit: 150
• Abrasive Material: Ceramic and Aluminum Oxide blend
• Attachment Type: Hookita hook-and-loop
• Hole Pattern: Multi-hole
• Package Dimensions: 13.8 x 6.9 x 7.3 inches
• Package Weight: 3.669 pounds
• UPC: 051131362432

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100199259