TEKTON 1/2 Inch Drive x 21 mm 12-Point Impact Socket | SID22321

Size is marked both with a high-visibility laser marking and a permanent stamped marking that won't wear off 12-point socket opening provides an exact fit for 12-point fasteners Radiused corners prevent fastener round-off by applying force to a fastener's flat sides, rather than its corners Meets a minimum of 1.3 times the ANSI/ASME standard for proof torque Detent pin hole on one side allows user to choose whether to engage a pin