15 1/2 Tricone Drill Bit
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Factory 15 1/2inch IADC 537 Tricone Bits Milled Steel Tooth Drill Bit Rock Bits
Type: 17 1/2 inch IADC 537 Milled Steel Tooth tricone Bits
Bearing design: open roller bearing with jet flush lubrication.
Threaded 7-5/8" API Regular Pin.
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