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Air-lift Reverse Circulation Roller

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GFH637

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GF637

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GFL637

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9 1/2″ IADC537

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8 1/2″ IADC537

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6 1/2″ IADC537

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6″ IADC 537

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TCI BITS 617

Conic&chisel insert improved the bit aggressivity and abrasive resistance.Reinforcing the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbid…

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TCI BITS 637

Conic&chisel insert improved the bit aggressivity and abrasive resistance.Reinforcing the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbid…

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12 1/4″GMT617

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12 1/4″GTM537

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