API Threading Chasers, Carbide Inserts for Tube Machining, Bar Peeling Inserts manufacturer / supplier in China, offering Drilling-Indexable Deep Hole Drilling-BTA Single Tube Drills-Ij-D55.60, Deep Hole Drilling-Indexable Gun Drill-Drill Head-Djq-Series, Deep Hole Drilling-Indexable Counterbore Drills- Drill Head-Jk40 and so on.