step drill set has reasonable structure and step down drill bit , and is more suitable for popularization and application. 2.
step drill set has many superior benefits, such as the step down drill bit . 3.
Among all kinds of step drill set , step down drill bit has widely found its applications in industry because of its fine properties. 4.
This product can avoid people the waiting time because it is able to emit full brightness without delay even one second. 5.
The product has already used in residences, offices, and industries. Thanks to its low energy consumption, it helps cut down many energy costs.
|Size||Step||Shank||Total Length||Item No. |
| || ||In Wooden||In Metal||In Plastic |
| ||4-20mm(9 steps)|| || || |
| ||4-30mm(14 steps)|| || || |
| ||6-20mm(8 steps)|| || || |
| ||6-30mm(13 steps)|| || || |
Since the establishment, Qingdao preco imp. & exp. co., ltd. has accumulated many years of experience in the design and manufacturing of step down drill bit . 2.
Qingdao preco imp. & exp. co., ltd. adopts high-end technology and implement strict measures to control quality of step drill set . 3.
Qingdao preco imp. & exp. co., ltd. insists on green development to build a better world together with our customers. Get more info! Based on our main business, PRECO endeavor to improve the competitiveness in step bit industry. Get more info! Our aim is to produce step drill bit set with the best quality and reasonable price, along with the best after-sales service. Get more info!