Stanley STMT89437-8B 1/2 Inch Drive Impact Socket 10 mm

The Stanley STMT89437-8B is a 10 mm impact socket with a 1/2-inch square drive. Stanley designs it specifically for impact tools, for performance and safety, and makes it from chrome-molybdenum steel. It is aimed at automotive and industrial work that needs reliable high-torque driving. The optimised socket wall gives smooth engagement that helps stop heavy fasteners rounding, and the size is clearly marked. Stanley marks it as exceeding the ANSI standard, and its 1/2-inch impact socket range runs to 23 sizes, from 8 mm to 32 mm.