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Wopereka API wobowola miyala yakuya IADC537 9 5/8″(244.5mm)
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API TCI batani pang'ono IADC537 9 7/8″ (250mm) pobowola mwala wolimba
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Katundu Wozungulira Batani IADC537 3 7/8″ (98mm)
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Ma Tricone Bits IADC537 4 5/8″ (118mm)
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Kubowola kwa Tricone IADC537 4 3/4″ (120.6mm)
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API trione rock bit IADC537 5 1/4″ (133mm)
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API rock kubowola pang'ono IADC537 5 1/2 ” (139.7 mm) kwa molimba bwino
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API kubowola bits IADC537 5 5/8″ (142.9mm)
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Liwiro lalikulu la tungsten carbide kubowola bits IADC537 5 7/8 ″ (149mm)
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Tricone rock bits IADC537 6 mainchesi (152.4 mm)
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Rotary tricone bit IADC537 6 1/4 mainchesi (159 mm)
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TCI trione rock bits IADC537 6 3/4 ″ (171mm)