API Threading Chasers, Carbide Inserts for Tube Machining, Bar Peeling Inserts manufacturer / supplier in China, offering Threading-Oil & Gas- Xt39 Oil Threading Inserts-27er3.5xt39, Holemaking-Deep Hole Drilling Tools-Indexable BTA Drill Insert-P11t308-G-8364, Holemaking-Deep Hole Drills- Indexable Drill Inserts-P09t308-G-8364 and so on.