Enhance your existing tool kit or replace a lost or damaged hex key with the STEELMAN 301506 6.8-Inch Long Arm 17mm 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 6.8-inches long overall with a 2.2-inch long 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.