7 1/2"IADC137 steel tooth milled tooth tricone drill bit
8 1/2'' single cutters, tricone cutters,tricone bit
8 1/2 ''single roller cone bit single cone
7 1/2" (190.5mm) PDC BIT hard rock drill bit tool
8 1/2"(215.9mm）steel body PDC drill bit PDC drilling bit
6"(152.4mm) tricone drill bits for non-excavation IADC637 tricone tooth bit
200mm IADC537 Tungsten Carbide Tricone Drill Bit
6 3/4'' iadc code 637 hard rock drilling tci triocne drill bit
Our main products: tricone bits, PDC bits, HDD hole opener, foundation single roller cutters,drag bit and related tools
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