Proto Flex Impact Socket, Socket Size 12 mm, Socket Shape 12-Point, Drive Type Impact

The 3/8" flex impact socket uses a ball and spring design which allows for a 30° working angle with a smooth 360° rotation. The TorquePlus™ drive 6-point configuration allows for a quick and easy socket engagement to the fastener flats, not the corners. 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.