Milwaukee Rect. Socket ShW 1in STD 21x28mm-1pc, 4932499124

Common Characteristics
SHOCKWAVE™ IMPACT DUTY steel (Chrome-Molybdenum) is high quality alloy steel which provides ultimate strength and durability.
Recessed corners allow torque to be transferred across the flats of the socket rather than producing stress on the points or corners.
Laser etched markings for easy identification.
Perfect fit to standard railway sleeper bolts