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API utanga amabuye yimbitse yo gucukura bits IADC537 9 5/8 ″ (244.5mm)
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API TCI buto biti IADC537 9 7/8 ″ (250mm) yo gucukura amabuye akomeye
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Rotary Button Bit IADC537 3 7/8 ″ (98mm)
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Tricone Bits IADC537 4 5/8 ″ (118mm)
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Imyitozo ya Tricone bits IADC537 4 3/4 ″ (120.6mm)
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API tricone urutare biti IADC537 5 1/4 ″ (133mm)
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API ya myitozo ya biti IADC537 5 1/2 ”(139.7 mm) neza neza
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Imyitozo ya API bits IADC537 5 5/8 ″ (142.9mm)
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Umuvuduko mwinshi tungsten karbide drill bits IADC537 5 7/8 ″ (149mm)
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Urutare rwa Tricone bits IADC537 santimetero 6 (152.4 mm)
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Rotary tricone bit IADC537 6 1/4 santimetero (159 mm)
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TCI tricone urutare bits IADC537 6 3/4 ″ (171mm)