Product Description EKLIND TOOL COMPANY is America's leading manufacturer of high quality, industrial grade hex keys, made with pride in the U.S.A. since 1950. The EKLIND 10213 Hex-L Key allen wrench - 13pc set SAE Inch Sizes .050-3/8 Long series meets the most stringent requirements of professional mechanics, tradespeople, do-it-yourselfers and hobbyists. From the Manufacturer Eklind L-Keys are produced from the highest quality Elkind Alloy Steel. They are heat treated for maximum strength and finished to resist rust. Eklind's superior quality provides maximum torque and prevents rounding out of the key or hex socket. The Eklind 10213, Hex-L Key Inch Long Arm 13-Piece set is contained in a convenient compact molded holder that firmly retains each key in designated holes. The molded holder is color-coded, which makes it instantly identifiable; red for inch sizes, and blue for metric sizes.