High quality, industrial grade, professional set. Made with Eklind Alloy Steel. Heat treated for optimum strength and ductility. Finished with Eklind Black Finish to resist rust. Fold up sets include a variety of popular sizes in one convenient handle to keep you from losing keys Fold a key out to a right angle to get maximum leverage. Fold a key out completely to operate like a screwdriver. Eklind Classic Steel fold-up sets are compact to fit most easily in your pockets. Sizes included: 3/16", 7/32", 1/4", 5/16" and 3/8". Made in the U.S.A.