Drill bit 28 30 32 34 38 40 42 50 60 straight cross ball tooth column cold press drill bit

Product Features：

High hardness, corrosion resistance, long service life, impact resistance

Product selling points：

① Exquisite workmanship, reliable quality, high-quality materials selected, good surface gloss and concentricity.

② Corrosion and impact resistance.

③ Easy installation, standard manufacturing process, standardized dimensions, and small errors.