Colored screwdriver bit /power bit /insert bit Bit type can be customized Colored screwdriver bit /power bit /insert bitBit type can be customized Manufacture and supply various full series of screwdriver bits, nutsetters, nut drivers, sockets, socket adapters, bit holders and quick changeconnectors for screwdriver bitsmaterial types:Cr-V 6150,8660,S2Surface treatment:sandblasted, tin-coating, Cu ...