UG-10MM21 Apex Standard 6-Point u-Guard Impact Socket, 1/4” Square Drive features a free-spinning design that provides maximum protection for polished and highly sensitive surfaces. The Apex u-Guard provides a protective barrier between genuine Apex Fastener Tools and your finely finished workpiece.

UG-10MM21 Apex Standard 6-Point u-Guard Impact Socket, 1/4” Square Drive has hex tolerances that are on average 48% tighter than DIN and 35% tighter than ANSI requirements. With Apex you are assured of an exact, sure fit. All Apex sockets have the tightest tolerances for straightness and concentricity in the industry. Apex industrial grade impact sockets are available in a wide range of lengths and wall thicknesses, and with single or double hex openings.