Screwdriver set use in mobile,horologe,computer,Tvset,Radio,Camera ,vcr cd ld.atc. material:made of ... Material:Carbon Steel Or Chorme VanadiumScrewdriver setuse in mobile,horologe,computer,Tvset,Radio,Camera ,vcr cd ld.atc.material:made of ... *150;8*20024sets18/1745*38*34cm2000sets/35days45 carbon steel rod, light chrome plating, the whole heat treatment, head magnetizing6sets/inner box ...