Apex MB-7MM21 Magnetic Long Length Drive Socket, Metric, 7 mm 6 Point Socket, 1/4 in Female Square Drive

Apex® sockets have 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. As the nut is run down, a spring loaded or hollow cylinder magnet allows the bolt or stud to retract into the socket body. Nuts are held firmly in the socket. High strength fasteners in demanding situations, like those found in the automotive and aviation industries, often require the use of an impact wrench or impact driver to deliver the amount of torque required to tighten or loosen them.