... 5.durable Adopting high flexible design, suit for hand machine which is produced by us for big workpieces. The hand machine has ... Non-woven convolute Wheel brushes and Non-woven Polishing Wheel Brushes.Specification:The normal size is 120MM for out diameter ,100MM for length. Standard ... rotation speed(3000 rpm), good brightness, excellent grinding effect, durable for use, work piece’s surface can keep ...