The Eklind Hex-L Key Allen Wrench 11-Piece Set, SAE Inch Sizes .050 to 1/4 (Short Series) meets the most stringent requirements of professional mechanics, tradespeople, DIYers, and hobbyists. Crafted from Eklind Alloy Steel that is heat-treated, quenched, and tempered, these tools deliver optimum strength, torque, and ductility for safe and reliable performance. Each key is coated with a rust-resistant finish for enhanced durability.