High Strength Construction:The Allen Wrench is heat treated chrome vanadium alloy steel die-forged body provides hardness, high torque and toughness. The whole body of hex key wrench is heat treatment, high torque. Best Materials: The L-Handle Hex Key Wrench is crafted from high-quality Chromium Vanadium Steel.This Hex Key Wrench is built to last. It’s construction ensures it can withstand even the toughest jobs, while its precision design allows for easy and accurate use. Ergonomic Design:The Allen Wrench with ergonomic design provides greater torque to loosen and tighten fasteners easily. The long arm key Wrench is suitable for narrow space use. Wide Applications: The L-Handle Hex Key Wrench is suitable for basic home repair, repair and mechanical maintenance. To remove and install socket cap screws found in towel bar, door handle, assembling furniture, equipment,and more. 【Widely Used】The ball end allen key set has clear visible size mark for fast size selection, good for diy repairs of electronics, electrical work, machinery, Manufacturer: IMGASDCSD