With professional and productive factory, HAINAISEN is one of the leading China pdc multi-stage tower drill bitspdc 

manufacturers. Welcome to wholesale pdc multi-stage tower drill bitspdc from us, we always have cheap products to offer you.

Name: PDC multi-stage tower drill bits

Type: Ordinary Strengthened

Article No.: FW2TP FW2TJ

Feature: Suitable to drilling medium hard---hard formation, blades of tower drill bits are setting on multiple working 

levels, so as to enhance the contact area between blades and working rock layer, reduced the drilling pressure on the unit 

area of the blade, prolong the service life. The small-diameter drill bits which set on the topmost have a good guidance 

function to ensure the angle when drilling, it also can be used for reaming the first-grade and second-grade holes who can 

adapted to the large torque, high pump volume and fast drilling speed.      http://www.pdcoiltool.com