low price,high quality material:carbon steel A2,C1045 fnish:YZ,WZ,black,plain,Ni plated, HDG Size:M3-M80 1) low price, high quality2) material: carbon steel A2, C10453) finish: YZ, WZ, black, plain, Ni plated, HDG4) size: M3-M805) packing: carton/pallet, according to customs' requirement