Features and Benefits: 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; Plastic holder firmly retains each key in a size marked hole; Sizes include: short: .050", 1/16", 5/64", 3/32", 7/64", 1/8", 5/32", 3/16" and 7/32"; Long: 1/16", 5/64", 3/32", 1/8", 9/64", 5/32", 3/16", 1/4" and 5/16". Color coded red for inch. Made in the U.S.A.