[Size] - 3/8" square drive socket, M9 spline bit, 2.36-inch (60mm) 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.
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