This extra-long ball-point hex key has a 1/4-inch tip, an L-shape design, and measures 7 2/5 x 1 21/32 x 5/16 inches. It is made of S2 tool steel for corrosion resistance and strong durability, delivers up to 33% more torque than ordinary hex keys, and its extra-long length and ball-point design offers greater access to fasteners from different angles in hard-to-reach applications.