Application: Perfectly compatible with 1989-2016 Cummins 4BT 3.9L, B Series 5.9L, for ISB 5.9L 6.7L and for QSB 5.9L 6.7L diesel engines, also fits for Paccar PX-6 engines. High Performance: Helps easily and properly remove and install the rear crankshaft seal / wear sleeve without damage and leakage, ensures that the installation depth of the crankshaft oil seal is correct. Superior Material: Made of high quality carbon steel for great strength, prevent corrosion and rust, impact resistance, sturdy and durable. High precision and hardness ensure reliable long-term service. Package Includes: .