Manufactured from chrome vanadium steel for strength and durability and then impacted for extra strength. 1/2" drive so will fit any 1/2" drive Ratchet handle, Power / Knuckle bar or Impact Gun Wrench etc...The sockets are 12 sided so multi-drive so bite onto the side of the appliance a lot more effectively. These specially designed 12 point sockets are very rare and can be used for hubs. Set includes the following: 1 x 24mm socket - 12 point, 1 x 30mm socket - 12 point, 1 x 32mm socket - 12 point, 1 x 14mm hex bit, 1 x 17mm hex bit. Weight: 1.71740102098 pounds.