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Onye na-eweta API nke obere olulu mmiri miri emi IADC537 9 5/8″(244.5mm)
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API TCI bọtịnụ bit IADC537 9 7/8″(250mm) maka igwu olulu mmiri siri ike
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Bọtịnụ Ntugharị IADC537 3 7/8″ (98mm)
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Mpịakọta ihe eji egwu mmiri Tricone IADC537 4 3/4″ (120.6mm)
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Bit tricone API IADC537 14 3/4″ (374mm) maka nkume siri ike
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Tricone Bits IADC537 4 5/8″ (118mm)
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Bit nkume tricone API IADC537 5 1/4″ (133mm)
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Ngwa egwu nkume API IADC537 5 1/2 ” (139.7 mm) maka olulu mmiri siri ike
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Bits API drill IADC537 5 5/8″ (142.9mm)
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Bits igwe eji eme ihe nke tungsten carbide dị elu IADC537 5 7/8″ (149mm)
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Akụkụ nkume Tricone IADC537 sentimita isii (152.4 mm)
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Nkeji tricone Rotary IADC537 6 1/4 inch (159 mm)