Features In order to achieve the best performance of the engine, it is necessary to check the valve regularly, adjust the necessary plug and adjust the gasket of various specifications. We have prepared many complete sets of products for you. It covers for HONDA YAMAHA SUZUKI KAWASAKI all models. Fitment Diameter 7.48 Thickness 1.20—3.50mm,0.05 has 47 specifications in one increment,3 per specification,141 in total,Applicable to all Japan Off-road 250F models. For Japan Off-road 250F For HONDA YAMAHA KAWASAKI SUZUKI 250F Japan Off-road Motorcycle. Package include A box of Valve Shim Kit (141 PCS).