3M Roloc Bristle Brush 76 mm K120 RD-ZB White — abrasive bristle disc for surface finishing

3M Roloc Bristle Brush 76 mm K120 RD-ZB White is an abrasive bristle disc designed for surface finishing, blending and light deburring. With a 76 mm diameter and K120 grit, this Roloc-compatible disc attaches to quick-change systems for handheld or power tool use. The flexible nylon bristles impregnated with abrasive grains conform to contours and edges, delivering controlled material removal and a uniform finish on metal and composite surfaces during preparation, repair or blending tasks.

Advantages

The abrasive bristle construction balances aggressive cutting with surface conformity, reducing the risk of gouging while providing consistent stock removal. Compatibility with Roloc quick-change systems enables fast disc replacement and efficient workflow. The disc's open-bristle design disperses heat and resists loading, allowing longer life and steady performance when blending welds, removing light burrs, or refining edges. Its medium-fine K120 grit yields visible surface refinement without over-polishing delicate geometries.

Suitable for

• Surface finishing and blending of welds on steel and stainless steel
• Light deburring of machined parts and edges
• Preparing metal and composite surfaces for coating or painting
• Refining contours and internal radii where flexible conforming action is required
• Removing oxidation, light corrosion and surface contaminants

Key specifications

• Disc diameter: 76 mm
• Abrasive grit: K120 (medium-fine)
• Attachment system: Roloc quick-change compatible
• Construction: Nylon bristles impregnated with abrasive grain
• Color: White

How to use

Mount the 76 mm Roloc bristle disc onto a compatible Roloc backing pad or mandrel following the tool manufacturer's mounting instructions. Operate the tool at the recommended speed for the disc and the substrate, using light to moderate contact pressure and smooth, overlapping strokes. Allow the bristles to adapt to contours rather than forcing excessive pressure; this ensures uniform finishing and prolongs disc life. Replace the disc when bristle wear reduces performance or when consistent finish can no longer be achieved.

Usage recommendations

Use appropriate personal protective equipment such as eye protection, gloves and hearing protection. Test on a representative area to confirm finish before proceeding on the full surface. For best results on painted or coated surfaces, follow up with progressively finer abrasives if a smoother finish is required.