Screwdriver set use in mobile,horologe,computer,Tvset, ... made of CR-V and PP and TPR. 10pcs Screwdriver set Material:Carbon Steel Or Chorme VanadiumScrewdriver setuse in ... and PP and TPR. Screwdriver set (10pcs)SX-LJH-HH010SL5*75;5*100;6*125;8*150;8*200 ... ;PH5*75;5*100;6*125;8*150;8*20024sets18/1745*38*34cm2000sets ... heat treatment, head magnetizing6sets/inner box+carton 10pcs Screwdriver set