The Eklind Steel Handle Fold-Up Hex Key Allen Wrench 9-Piece Set, SAE Inch Sizes 5/64 to 1/4 meets the most stringent requirements of professional mechanics, tradespeople, do-it-yourselfers, and hobbyists. Eklind's classic steel handle fold-up design includes a range of popular sizes in one convenient tool, preventing the loss of individual keys. This professional-grade hex key set is built for durability and reliable performance.