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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