These HSS Cobalt twist drill bits are specifically designed for drilling hard materials, including stainless steel (INOX), titanium alloys, high-temperature alloys, carbon steel, and other high-strength composite materials.

HSS M35 Cobalt contains 5% cobalt, which significantly increases the heat resistance and hardness of the drill bit (up to 58-68HRC). This prevents structural breakdown under high heat conditions, extending the operational life of the bit when drilling tough metals.

The 135-degree and 118-degree split points are self-centering, meaning the drill bit will not skid or walk on the metal surface upon contact. It ensures fast penetration and reduces the required thrust force during operation.

Yes, these drill bits conform to the standard DIN 338 specifications, ensuring precise tolerances, balanced geometries, and high consistency in professional manufacturing environments.

Our standard package options include 5pcs or 10pcs in a plastic box, and 50pcs in an inner box. We also offer customization options for OEM/ODM configurations according to your market's needs.

We supply various surface treatments including Gold (Titanium-like coating), Titanium finish, and Black Oxide, each providing different levels of lubrication, heat dispersion, and corrosion resistance.