Designed for cleaning and light sanding, Dremel EZ SpeedClic brushes are perfect for getting to those hard-to-reach areas. The built in polishing compound ensures the perfect finish every time. Features and Benefits Bristles include a built-in polishing compound Available in a range, to best suit your needs See below for product sizes and types Notes Shank diameter: 3.2 mm Working diameter: 25 mm Grit: 36 Width: 25 mm Maximum RPM: 15,000 1/min Length: 25 mm Height: 7 mm 2615S472JA Shank diameter: 3.2 mm Working diameter: 25 mm Grit: 120 Width: 25 mm Maximum RPM: 15,000 1/min Length: 25 mm Height: 7 mm 2615S473JA Shank diameter: 3.2 mm Working diameter: 25,0 mm Grit: 220 Width: 25 mm Maximum RPM: 15,000 1/min Length: 25 mm Height: 7 mm