45# steel forged.Screw drill bit part is chrome vanadium steel - more info check here: http://www.buyindustrialtools.com/24PC-COMBINATION-TOOLS-SET-10098761/
Quick Brief
Application: OtherPlace of Origin: China (Mainland)Model Number: TL6724-3
Product Features:
45# steel forged.Screw drill bit part is chrome vanadium steel