Screwdriver set use in mobile,horologe,computer,Tvset,Radio,Camera ,vcr cd ... . material:made of CR-V and PP and TPR. 10pcs Screwdriver set Material:Carbon Steel Or Chorme VanadiumScrewdriver setuse in mobile,horologe ... .atc.material:made of CR-V and PP and TPR. Screwdriver set (10pcs)SX-LJH-MH010SL5*75;5*100;6*125;6 ... whole only heat treatment, head magnetizing6sets/inner box+carton 10pcs Screwdriver set