Description:

[Size] - 1/4 square drive socket, H3 H4 H5 H6 H7 H8 H10 hex bit, 1.38-inch (35mm) total length.. [Torque Strength] - Chrome-molybdenum steel has excellent durability and strength with every impact movement; black phosphate coating for extra protection against rust and corrosion.. [Chamfered Design] - Chamfered ends insert smoothly into fastener head, reducing wear.. [Pin Hole] - Individual pinhole base design adds extra security by placing in a locking pin for stability when exerting strong torque motion.. [Widely Used] - Use with a ratchet to increase the speed of tightening square drive fasteners. And the product has no insulation properties and is not suitable for electrical environments..