K-T Industries 4" Knot Cup Brush 5/8-11

Cup brushes are designed to reach into angles and corners, thoroughly cleaning irregular shapes and surfaces. Knot brushes can withstand more severe usage than crimped wire brushes. Knot brushes are useful for removing weld scale, rust, old paint, and corrosion. Cup brush size 4" Arbor and bushing ID's 5/8 - 11. Maximum RPM 8,500.