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 2 sets: Item # 10213: 13 pc Long Series Hex-L® Key Set with Holder. Inch Sizes: .050, 1/16, 5/64, 3/32, 7/64, 1/8 , 9/64, 5/32, 3/16, 7/32, 1/4 , 5/16, & 3/8, Item # 10609: 9 pc Long Series Hex-L® Key Set with Holder. MM Sizes: 1.5, 2, 2.5, 3, 4, 5, 6, 8, & 10