Made in U.S.A. High Quality, Industrial Grade, Professional Tools. Made with Eklind® Alloy Steel. Heat Treated for optimum strength and ductility. Finished with Eklind® Black Finish to resist rust. Includes the following 3 sets: Item # 25912: 9 pc Hex Key Series Ergo-Fold™ Fold-up Set with Ergonomic Handle. Inch Sizes: .050, 1/16, 5/64, 3/32, 7/64, 1/8 , 9/64, 5/32, & 3/16, Item # 25171: 7 pc Hex Key Series Ergo-Fold™ Fold-up Set with Ergonomic Handle. MM Sizes: 1.5, 2, 2.5, 3, 4, 5, & 6, Item # 25581: 8 pc Torx® Series Ergo-Fold™ Fold-up Set with Ergonomic Handle. Sizes: T8, T10, T15, T20, T25, T27, T30, & T40