Screwdriver set use in mobile,horologe,computer,Tvset,Radio ... made of CR-V and PP and TPR. 10pcs Screwdriver set Material:Carbon Steel Or Chorme VanadiumScrewdriver setuse in ... material:made of CR-V and PP and TPR. Screwdriver set (10pcs)SX-LJH-HH010SL5*75;5*100; ... /35days45 carbon steel rod, light chrome plating, the whole heat treatment, head magnetizing6sets/inner box+carton 10pcs Screwdriver set