Sait 4" x 3" C16 Concrete Grinding Cup Stone 12 pk ...
Type:Grinding Cup Stone|Material:Silicon Carbide|Diameter:4"|Length:3"|Bore:5/8"11|Max RPM:9050|Shape:Type 11. The Sait Grinding Cup Stone features silicon carbide grain with a coarse grit for tough grinding applications. The stone is ideal for cleaning castings, mold marks and removing flashing on masonry, concrete and stone.