Hss Spiral flute Step drill
1. more convenience more efficiency
2. High Grade M2 HSS 
3. TiN coated, Long tool life 

TiN coated Step Drill kit 
The cutting edge of each step has relief angle. this means the cutting edge is also the highest point in advance direction.
The ideal tool for sheet metal working in the following sectors of industries: electrical, sanitary enginerring and heating techincs or automotive, mechanical engineering, aviation and switching systems up to 2,0mm sheet thickness.
This tough tool is suitable for all standard industrial materials: nonferrous metal, special steel, thermoplastics and duroplastics as well as sheet metals up to 4.0mm thickness.
This durable and versatile tool will center, spot-drill, bore and debur - all in one smooth, high performance working cycle.



Include 3pc spiral flute step drill;

TIN-Coated;

4-12mm, 
4-20mm,
4-30mm,

each 1pc

Rose Plastic Box;