Ideal for precision cleaning and deburring in hard to reach areas. Mounted on a 6mm spindle. Max rpm 4,500. Abracs Decarb Wire Brush Set (2 Piece) Abracs De-Carb Wire Brush Set 2 Piece 2 Piece De-carb brush set includes 1x Pointed Tip Brush & 1x Flat Tip Brush. Ideal for precision cleaning and deburring in hard to reach areas. Mounted on a 6mm spindle. Heavy Duty Long Life Ultimate Performance