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. Eklind T-handle hex keys provide extra reach and extra leverage Includes sizes: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm. Loop-style T-keys stack neatly and fit in a compact pouch to fit most easily in your tool box. Made in the U.S.A.