Sit Cup Brush - High resistant crimped steel brush, to be fixed on to angle grinders or special fix machines. Suited for metal surface preparation before painting. Grit – 0.35 Crimped Steel Wire Max RPM – 8500 rpm Bore – M14 Brush length – 25 mm Brush Diameter – 100 mm Light-duty jobs like light de-burring, satin finishing, cleaning of small slags and rust, de-burring of tube edges. Excellent quality steel cup brush made in Italy by SIT