EKLIND TOOL 10018 Comb Hex-L Key Set, 18-Piece 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. Color coded RED for INCH. Plastic holder firmly retains each key in a size marked hole. Meets or exceeds all applicable standards and regulations set forth in ANSI, ASME, RoHS, REACH, CA prop 65 and Dodd-Frank Conflict Minerals legislation. Combination short and long arm Hex-L key set. Has a unique finish to help prevent rust. Made of chrome nickel alloy steel. Corners are sharp and clean. 18 piece set.