Wide Compatibility: Fits for GM 1996-1999 full-size 2 and 4 wheel drive trucks, vans, and Suburbans 6.5L diesel engine. Fits for Chevrolet, Cadillac, GMC, Pontiac 6.5L Diesel engine 1996-1999 Replacement: Replace for J-41711 and J-41089. The wrench size is 15 mm, 12-point, double box-end type Premium Material: Featured top high quality solid steel, constructed with slick black finish, durability and anti corrosion, repeatedly tested and gradually optimized.high performance and long service time Great Performance: This two specially formed wrenches are must tool, due to the location of the throttle, cruise control, T.V. cable bracket, cooling system crossover pipe and bracket, and the thermostat housing Premium Service: If you encounter any problems, please contact us in time, we will deal with you as soon as possible. No worry about buying Premium Service: If you encounter any problems, please contact us in time, we will deal with you as soon as possible. No worry about buying