Spiral step drill set

3-piece set industrial spiral step drills with TiAlN coating.

Sizes: 4-12; 4-20; 6-30 mm

This durable and versatile tool will center, point, ream and deburr - all in one smooth work cycle.
Spiral step drills have a much better chip evacuation than the ordinary straight step drills.

Version: with 2 cutting edges, cross cut and side breaker. The lips are CBN ground from a solid hardened form. There will be better and sharper cutting edges obtained - without burrs.
With TiAlN coating. (Overall most of the coatings increase the hardness of the tool and / or the smoothness. A coating allows the cutting edges of the tool nicely along the material slides, with no material from adhering to the tool. Coatings also help with lowering the temperature associated with the cutting process and extends the life span).
The mm sizes are laser marked on the tool itself.
Due to the special shaft, the slip occurring in the drill head is prevented.

Scope:
• The ideal tool for sheet metal, used in the following industry sectors: electrical, plumbing, heating engineering, automotive, mechanical engineering and aviation.
• This extremely hard tool is suitable for all standard industrial materials: nonferrous metal, special steel, thermoplastic and thermosetting plastics.