3M Precision Shaped Grain Adhesive-Backed/PSA Sanding Disc Abrasive Disc, 127 mm, 400 Grade, 400 Grit

This adhesive-backed/PSA sanding disc is a 127mm abrasive disc designed for industrial surface preparation and finishing in automation, electronics, electrical and mechanical workshops. It uses precision-shaped grain mineral on a C-paper backing to deliver consistent cutting action with reduced loading, and is suited to both hand and machine sanding where dust extraction and a repeatable finish matter.

• Precision-shaped grain cuts Faster and stays sharper
• Anti-load coating reduces clogging and extends life
• 3M Xtract multi-hole pattern improves dust extraction
• Hookit alternative PSA attachment enables quick changes
• C-paper backing offers a balance of flexibility and durability
• High dust capture supports cleaner workshop environments

• Suitable for metal dimensioning and coating removal tasks
• Ideal for scuffing and prep prior to topcoat application
• Used for de-flashing and edge rounding on fabricated parts
• Can be used for coating refinement and rework operations
• Suitable for composite and gelcoat surface finishing

When used with an extraction system, the multi-hole pattern achieves very high dust removal, markedly reducing airborne particles and pad loading compared with typical 5 to 6 hole discs.

The product uses a pressure-sensitive adhesive backing compatible with Hookit-style back-up pads for fast on/off changes while maintaining secure adhesion during power-tool use.

The precision-shaped grain mineral is formulated for effective removal on metals, painted surfaces, composites, gelcoat and various timbers without Rapid deterioration.

The C-weight paper backing provides a compromise between flexibility for contour sanding and robustness for repeated use in both hand and powered applications.