API Threading Chasers, Carbide Inserts for Tube Machining, Bar Peeling Inserts manufacturer / supplier in China, offering Holemaking-Drilling-Spade Drills-HSS Spade Drill Inserts-Sp-4-M0600-10xh, Heavy-Machining-Bar Peeling-Carbide Inserts-Tnmg4510-St, Holemaking-Drilling-Spade Drills-Spade Drill Insert-Sp-2-M0290-50xh and so on.