Detailed Product Description This kind of wheel brush can be used for rust removing and welding surface finishing1- sizes in inch: 3/4",1", 1.5", 2"2- sizes in mm: 20,25,35,503-wire type: S- gray carbon steel wire crimped: Dia 0.20,0.30,0.35mm BS- brass coated stell wire crimped Dia 0.20,0.30mm SS- stainless steel wire: Dia 0.22,0.30,0.35,0.50mm ST- knotted steel wire: Dia 0.35,0.50mm