EZ SpeedClic sanding discs are excellent for sanding and shaping lightly. The discs are available in 60 and 240 grain with a diameter of 30 mm and are compatible with the SC402 mandrel. Change discs without using a key! EZ SpeedClic sanding discs last up to twice as long and eliminate up to twice as much material as Dremel 411 and 413 sanding discs. Fast, simple and keyless.