Stanley STMT89438-8B 1/2 Inch Drive Impact Socket 11 mm

For driving 11 mm fasteners with an impact tool, the Stanley STMT89438-8B is a 1/2-inch square drive impact socket. Stanley makes it from chrome-molybdenum steel and designs it specifically for impact use, for performance and safety. The optimised wall geometry engages smoothly and helps prevent rounding on heavy nuts and bolts, while the size is clearly marked on the socket. Stanley builds it for automotive and industrial professionals who need reliable high-torque drive and marks it as exceeding the ANSI standard. The range has 23 sizes, 8 mm to 32 mm.