3M 7000121183 Finishing Flap Brush 8x2x3 in

Product Description

The 3M 7000121183 is a finishing flap brush designed for light-duty cleaning and surface finishing applications. Built around a center core, individual abrasive sheets are adhered at a 90-degree angle, creating a flap-style action that conforms to contours and produces consistent surface results. The brush uses fine-grade aluminum oxide as the abrasive mineral, making it well suited for final-pass finishing work where controlled material removal and surface refinement are the priority. At a medium hardness with a density rating of 5A, this brush balances aggressiveness and surface sensitivity for polishing and light cleaning tasks.

This flap brush is used in surface preparation, deburring, and finishing operations across metal fabrication, maintenance, and general industrial applications. Its 8 inches x 2 inches x 3 inches form factor accommodates bench-mounted spindles and portable grinders used in fabrication shops, maintenance facilities, and similar environments. It is suited for technicians and tradespeople performing final surface conditioning on metal or composite workpieces where consistent finish quality is required.

Key Features

• Fine-grade aluminum oxide abrasive mineral for controlled surface finishing
• Individual sheets adhered at a 90-degree angle to a center core for flap-style action
• Medium hardness with 5A density rating balances cut rate and finish quality
• 8 inches x 2 inches x 3 inches dimensions suit standard spindle and grinder arbors
• Light-duty design optimized for cleaning and finishing rather than aggressive stock removal

Compatibility

Designed as an OEM-style replacement and standard consumable flap brush for use with bench-mounted spindles and compatible rotary grinding or finishing equipment accepting a 3-inch arbor bore.

Installation Notes

Installation and use should be performed by qualified personnel familiar with abrasive tool safety practices. Ensure the spindle or grinder is fully powered down and locked out before mounting or removing the brush. Verify that the equipment RPM rating is compatible with the brush before operation. Follow ANSI B7 abrasive product safety standards and always use appropriate personal protective equipment including eye and face protection.

Technical Specifications

• Dimensions: 8 inches x 2 inches x 3 inches
• Abrasive Mineral: Aluminum oxide
• Grade: Fine
• Density: 5A (medium hardness)
• Weight: 0.88 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121183