Step drill
1.Good quality
2.satisfactory service
3.Shortest delivery
4.Customized design is accepted

 Step drill

1. Good quality and competitive price;
2. Excellent after-sales service;
3. Shortest delivery and satisfactory service;
4. Own the automatic production lines of diamond tools;
5. Keep the competition power in the market:the United
States,Europe,Japan,Hongkong,Southeast Asia;
6. The products own longer service life, reaching to the high level;
7. Customized design is accepted.
Your any requirement will receive our prompt and careful attentions.If you are interested in our products, please contact us directly.We are looking forward to receiving your inquiry
our step drill is the newest design with spria flute.It make theproducts have better quality and a long life and make the drill sharp than other product.                                                                                                                         
All sets is popular size .it can make you only 1 drill for all kinds of different diameter hole,and it is a selfcenter.our products have best quality HSS in china .And vacuum heat treatment.Make the cutter clear and have a stable intensity.
And we also supply our customer with triangle shank,make the drill have more power.