Features and Benefits: * 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 * Plastic holder firmly retains each key in a size marked hole Size include: 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm, 8.0mm and 10.0mm. Color coded Blue for metric. Made in the U.S.A.