High quality, industrial grade, professional set. Made with Eklind Alloy Steel. Heat treated for optimal strength and ductility. Finished with Eklind Black Finish to resist rust. Torx keys will drive Torx, Torx Plus and star recess fasteners Sizes include: T10, T15, T20, T25, T27, T30 and T40. Fold-up sets include a variety of popular sizes in one convenient handle to keep you from losing individual 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 pocket.