A set of six 1/2"D impact sockets in a range of sizes from M8 to M18. The low-profile is useful when clearance is limited and the bits are impact quality chrome molybdenum for use with air and power tools for the fast, safe adjustment of spline fasteners. The sizes are engraved on the sockets for easy identification and supplied in a rugged metal case with a fitted foam insert to keep the sockets safe and organized.