Grips slugged bolts and inch screws. ● Easily tighten and loosen almost all bolts, nuts, hook screws, etc. 54 steel pins inside the socket firmly grasp triangular, square, hexagonal nuts, Torx [[(R)] screws, hook screws, eye bolts, and polygonal screws and nuts. The socket body is made of alloy steel. Nut depth, maximum 0.4 inch (9.5 mm). The torque of the gripper is 248 Nm (at 0.7 inch (18 mm)).