Value Collection 2107558350 Brass Knotted Cup Brush 3in

Product Description

The VALUE COLLECTION 2107558350 is a knotted brass cup brush designed for aggressive surface preparation on metal, welds, and castings. The 3-inch diameter brush head uses 0.02-inch brass wire twisted into knotted fill, which delivers more abrasive contact force than straight-fill wire. Rated to 12,500 RPM maximum, this brush mounts via a 5/8-11 threaded arbor and fits standard right-angle grinders and bench grinders. The 3/4-inch trim length provides controlled wire extension for consistent cut and wear life. Metalworkers, fabricators, and maintenance technicians use this brush for weld spatter removal, rust stripping, and pre-weld cleaning.

This cup brush is suited for use on ferrous and non-ferrous metals where brass wire is preferred to avoid spark generation or iron contamination. Common applications include cleaning aluminum, brass, copper, and stainless steel workpieces where carbon steel wire is not acceptable. Single-row construction focuses wire contact at the brush face, making it effective in confined areas and along weld seams. It is a standard production-line tool in fabrication shops, maintenance facilities, and plumbing and HVAC service environments where tube and fitting prep is required.

Key Features

• Knotted brass wire fill for aggressive material removal with reduced spark and iron contamination risk
• 3-inch diameter cup brush head sized for standard angle grinder coverage
• 0.02-inch wire diameter balances stiffness and surface conformity
• 12,500 RPM maximum rating compatible with common grinder speeds
• 5/8-11 threaded arbor hole for direct mounting to most grinder spindles
• Single-row construction focuses contact force for weld seam and edge work

Compatibility

Designed to mount on right-angle grinders and bench grinders equipped with a 5/8-11 threaded spindle. Verify the tool RPM rating meets or exceeds 12,500 RPM before installation.

Installation Notes

Installation and use should follow ANSI B7.1 and the grinder manufacturer safety guidelines for wire brush accessories. Always power down and disconnect the grinder before mounting or removing the brush. Thread the 5/8-11 arbor fully onto the spindle and confirm the brush is secure before operating. Wear appropriate eye and face protection, as wire fill can shed during use.