98,4 (3 7/8) STD321
3 7/8, IADC321, Central, 2 3/8 Reg, 9,4lb
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Specifications
Circulation Type
Central Fluid
Cutting Structure
Steel Tooth
IADC Series
300
Formation Type
Hard
Industry
Water Well
API Thread Size
Pin 2 3/8" Reg
Size
3 7/8
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