Wiseco VSK7 Premium 7.48mm OD Valve Shim kit 7.48 millimeter outer diameter valve shim kit contains 3 of each 47 different thicknesses 7.48 millimeter shim kits fit all Japanese 250Fs These kits are expertly manufactured to OEM specifications with optimum materials To ensure long service life, each shim is heat treated and precision ground to exact sizes The perfect complement to Wiseco's complete line of valve train components