Drill Chuck 4-32mm Hss M35 Cobalt Spiral Groove Step Drill Bits 1/4' Hex Handle 1pcs

M35 high-speed steel TAG drill bit, superior quality and more durable than the HSS 4241 TAG drill bit. The high-speed steel and titanium coating guarantee extreme durability; it will remain like new and shiny for years to come.

Hex shank diameter: 6.35 mm. No center punch required. Compared to a regular helical drill bit, it is not easily damaged and can be used for deburring, chamfering, and opening holes. M35 high-speed steel TAG drill bit, superior quality and more durable than the HSS 4241 TAG drill bit.

As effective as an excellent cobalt drill bit. Made of super-strong HSS steel for durability and a long service life.

The fixed drill tip allows for fast and smooth drilling on steel plates, aluminum sheets, wood boards, plastic boards, etc. (The board must be thinner than the height of the marked drill bits). Specifications: Material: High-speed steel, Co (HSS co M35) Surface treatment: Titanium coated Hex shank diameter: 6.35 mm / 1/4 Size: 4-32 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 32 mm); 15 steps Features: Titanium coating to reduce dust and heat. High-speed steel TAG drill bit M35, better quality and more durable than the HSS 4241 TAG drill bit. Effective punch, like an excellent cobalt drill bit. Very useful for drilling, especially holes in stainless steel, metals, plastics, and wood. Suitable for drilling holes in sheet metal, steel plate, aluminum plate, brass, or wood. A highly recommended tool to have on hand. Workshop tips on drilling stainless steel sheets: 1. A hand drill and a bench drill can be used when drilling stainless steel sheets. A hand drill can drill steel sheets less than 1 mm thick, and a bench drill can drill steel sheets 2-3 mm thick. 2. Low-speed drilling is necessary when drilling stainless steel sheets; hundreds of rpm are sufficient. 3. Please water it to cool it during drilling to prolong its lifespan; a rotation speed of 250-400 rpm is recommended. Note: - When drilling, please wear appropriate protective gear to avoid wood chip splashes. - Size is measured manually; there may be a 0-3 mm error, which is normal.