Dewalt Accessories DW4916 Knotted Cup Brush 4 in

Product Description

The DEWALT ACCESSORIES DW4916 is a knotted cup brush built for demanding surface preparation work on metal. Constructed from carbon steel wire at 0.020 inches in diameter, it is engineered to deliver consistent cutting action across a range of aggressive applications. An internal holding plate keeps the wire bundle centered during operation, maintaining balance and reducing the risk of wire fatigue or separation. The brush measures 4 inches in diameter and mounts via a 5/8-11 arbor, making it compatible with most standard angle grinders. It is a go-to tool for HVAC techs, plumbers, pipefitters, welders, and general metal tradespeople who need reliable surface prep results.

This cup brush is suited for metal deburring, edge blending, weld cleanup, and rust removal from ferrous metals. Its knotted wire configuration applies more aggressive cutting pressure than crimped styles, making it appropriate for heavy-scale removal and surface conditioning on pipe, structural steel, plate, and fabricated assemblies. The package contains 5 brushes, providing job-site continuity for extended work runs or multi-tech deployments. Both professional tradespeople and knowledgeable DIYers working with angle grinders will find this brush well suited to their surface prep workflow.

Key Features

• Carbon steel knotted wire construction for aggressive cutting action on ferrous metal surfaces
• 0.020-inch wire diameter provides a balance of flexibility and abrasive force
• Internal holding plate maintains wire consistency and supports safe operation at speed
• Even wire balance engineered for smooth, vibration-reduced performance
• 5/8-11 arbor fits most standard angle grinders used in trade applications
• Package quantity of 5 brushes supports extended production use

Compatibility

Designed as an OEM-style accessory for use with angle grinders fitted with a 5/8-11 threaded spindle, which is the standard arbor size on most 4-inch and 4.5-inch angle grinders in professional trade use.

Installation Notes

Installation and use of this cup brush should be performed by qualified tradespeople familiar with angle grinder safety protocols. Always power down and unplug or battery-disconnect the grinder before mounting or removing the brush. Verify that the grinder RPM rating meets or exceeds the rated RPM of the brush before operation. Wear appropriate PPE including face shield, eye protection, and gloves, and ensure bystanders are clear of the wire path during use.