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6" (152.4mm) IADC221 Milled Tooth Tricone Drill Bits with One Central Jet Hole for Well Drilling

2025-04-13 4290
221
Customized
API
Taper-length
Center Drill Bit
Cobalt Steel Alloys
Well Drilling
Rubber Seal, Metal Seal
API 7-1
Steel Tooth
Gold, Blue, Black and Customized
221
New
Ruishi
Ply Wood Box
8 1/2" 12 1/4" 17 1/2"
China, Cangzhou
820719
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