Designed for Bearing Work: The pressure piece set is an essential for bearing, female & simmer ring work. Includes Driver Tool: The driver tool can be used for bearing assembly or disassembly for motorcycles, cars, trucks, tractors, electric motors, and other uses. 3 Drivers Included: 110/140/160mm. Adapter Sizes: 10-12,12-14,14-16,15-17,16-18, 18-20,20-22,22-24,25-27,28-30, 30-34,32-36,35-40,38-42mm