... Cup brushes-twisted/knotted wire for driller to clean metal ,ships, car , surface and remove rust,paint,welding scale,corrosion DIY BRUSH WITH SHANK Cup brush-twisted ... .35/6.03707522035370752205012500100PCS100256.35/6.037100250353710025050850060PCSRemarks:all brush shaft-mounted of diameter is 1/4"( ... such as edges and corner. Cup brush-twisted /knotted wire with shank