3M 7100138330 Scotch-brite Hook-it 6 Inch Finishing Disc

Product Description

The 3M 7100138330 is a non-woven silicon carbide finishing disc designed for light to moderate surface preparation work on metal, plastic, wood, and fiberglass. Built on a 3D non-woven structure, the disc maintains consistent cut and finish throughout its life rather than degrading as the surface wears. It attaches via the Hook-It quick-change system, allowing fast swaps without tools. Rated at an ultra fine grade, it is suited for satin finishing, scratch blending, deburring, and general cleaning passes. Licensed trades and fabrication shops use this disc where a controlled, repeatable surface finish is required without aggressive material removal.

This disc is used across metal fabrication, welding cleanup, and light surface prep applications. It handles aluminum, stainless steel, and other metals effectively, and is also rated for use on plastics, wood, and fiberglass. The conformable non-woven construction allows the disc to follow contoured surfaces and reach recessed areas that rigid abrasives cannot access. Typical applications include pre-paint prep, weld bead blending, oxide removal, and producing consistent satin finishes on decorative or structural metal components.

Key Features

• Ultra fine silicon carbide grade for light to moderate cleaning, satin finishing, scratch blending, and deburring
• Non-woven 3D structure delivers long service life and consistent finish quality throughout use
• Conformable construction accesses contoured surfaces and hard-to-reach areas
• Hook-It quick-change attachment system allows fast, tool-free disc changes
• Compatible with aluminum, stainless steel, other metals, plastics, wood, and fiberglass

Compatibility

Designed for use with Hook-It compatible right-angle grinders and finishing tools that accept 6 inch hook-and-loop style backup pads.

Installation Notes

This disc is installed and operated by metalworkers, fabricators, and finishing technicians using compatible angle grinders or finishing tools. Confirm the backup pad is rated for the disc diameter and the tool RPM before use. Inspect the disc and the hook-and-loop backing for wear before each attachment. Always power down and disconnect the tool before changing discs.

Technical Specifications

• Abrasive Material: Silicon Carbide
• Construction: Non-Woven
• Disc Diameter: 6 inches
• Grade: Ultra Fine
• Attachment Type: Hook-It Quick-Change
• Package Dimensions: 12.9 x 12.9 x 4.6 inches
• Weight: 1.65 pounds
• UPC: 00048011292953

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138330