[MATERIAL]: Made of 304 stainless steel [SET INCLUDE]: M3 x 0.5 x 2D 20Pcs; M4 x 0.7 x 2D 20Pcs; M5 x 0.8 x 2D 20Pcs; M6 x 1 x 2D 20Pcs;M8 x 1.25 x 2D 20Pcs;M10 x 1.5 x2D 10Pcs;M12 x 1.75 x 2D 10Pcs [EXQUISITE PACKAGING]: It is equipped with translucent storage box. There are several slots in the storage box to separate the products of different specifications for easy selection and use [HIGH PERFORMANCE]: Under the bond cooperation of nickel, a layer of anti-oxidation layer is formed, which has the characteristics of anti-rust, anti-corrosion, safety, non-toxic, acid resistance, high hardness and not easy to deform [APPLICATION]: Widely used in aviation, automobile, steam turbine, electronic communication, mold, mechanical equipment and other fields