This is a Valve Adjusting Kit for All OS Max 4-Stroke Engines. / / FEATURES: This set includes all the tools needed to adjust the valves on the / four-stroke engines. / / INCLUDES: One .04mm Feeler Gauge (.0015 in) / One .10mm Feeler Gauge (.004 in) / One 1.5mm Hex Key / One 5mm Wrench / One Plastic Carrying Case / ir/jl