2403M/A-八角套筒 Double Square Socket-1/4″Drive

The 8-point socket makes use on stubborn or damaged fasteners, and also on fasteners made from soft materials. Uses a radius-corner design that shifts contact area and stress away from the fastener corners and distributes contact stresses over a large area of the socket, minimizing slippage. Its internal design minimizes fastener rounding and allows the user to more easily turn worn, rounded, or rusted fasteners.