1.Founded in 1989 2.Professional manufactuer 3.ISO9001 passed 4.Export Europea, USA, Canada, AU, Eastern Asia Screwdriver bits --phillips double end blts Material: TW S2, CN S2 Hardness: 59-61 for the TW S2, 58-60 for the CN S2. Toughness: 280-300 for the TW S2, 240-260 for the CN S2. Package: 10pcs/ set in plastic blister Size and Packing Detail Screw driver bits
