Enhance your existing tool kit or replace a lost or damaged hex key with the STEELMAN 301492 7-Inch Long Arm 10mm Metric L-Style Hex Key. Forged of durable allow steel for lasting durability, this handy tool lets you easily tighten down set screws, bolts, and other Allen / hex headed fasteners. To guard against damaging rust and corrosion, this tool has a protective black oxide finish. Measuring 7-inches long overall with a 1.3-inch short arm, the L-shape of this compact tool provides reach when you need it for recessed fasteners and increased wrench-like torque on stuck or stubborn screws.