3 Pc. Crank Bolt Socket Set - 17/19/21mm Breaks loose crank bolts that other tools can't, found on Toyota & Honda vehicles. Counter-weighted design for high torque applications. Can use with impact tools. OAL 89mm w/ 1/2 square drive. Includes 3 sizes packed in blow-mold case: 17mm, 19mm, 21mm. 14mm thin-wall 12-point socket. Features a swivel square-drive to access hard to reach spark plugs. Rubber insert holds plug. 3/8 square drive.. Applications include:. BMW N54, N55, N63, Benz E90. Mini Cooper. Infinitis 1069