3M BELT3X211PK120 Sanding Belt 120 Grit 3x21 in 10 Pack

Product Description

The 3M COMPANY BELT3X211PK120 is a 3 x 21 inch abrasive sanding belt rated at 120 grit, sold in a 10-pack for portable power sanding tools. It combines Cubitron abrasive grain with premium aluminum oxide minerals bonded to a heavy Y-weight cloth backing. The film splice construction allows bi-directional belt operation, which extends usable life and reduces the need to track belt orientation during a job. This belt is built for tradespeople and finishing professionals who need consistent stock removal on wood, metal, or composite surfaces with a portable belt sander.

This belt fits standard 3 x 21 inch portable belt sanders commonly used in woodworking, metal fabrication, drywall finishing, and general construction applications. The 120 grit rating positions it in the fine-to-medium range, making it well suited for surface preparation, finish sanding, and light material removal. The 10-pack quantity supports sustained production work without frequent reordering.

Key Features

• 120 grit rating for fine-to-medium surface preparation and finish sanding
• Cubitron abrasive grain blended with premium aluminum oxide for consistent cut rate
• Heavy Y-weight cloth backing provides durability under load
• Film splice enables bi-directional belt operation
• Fits standard 3 x 21 inch portable belt sanders
• 10-pack quantity for production and jobsite use

Compatibility

Designed for use with portable belt sanders that accept 3 x 21 inch abrasive belts.

Installation Notes

Installation is performed by tradespeople, woodworkers, or finishing contractors using standard portable belt sanders. Before changing belts, power down the tool and disconnect it from its power source. Confirm belt tracking direction if running a directional splice, or use the bi-directional capability of the film splice to simplify orientation. Follow the tool manufacturer guidelines for belt tensioning and tracking adjustment.