A 25 piece kit consisting of five rubber drums: 12.7mm dia x 12.7mm long, 19mm dia x 25mm long, 25 mm dia x 25mm long, 38mm dia x 38mm long, 50mm dia x 38mm long and supplied with fixed diameter sanding sleeves in 80 and 120 grit. Endless uses and a real must for anyone's tool kit. Max speed 1500rpm. Supplied in a plastic case.