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Kamfanin Tricone bits IDC127 4 9/16 inci (115.9mm)
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Kamfanin Tricone bits IAC127 5 7/8 inci (149mm) don hakowa mai ƙarfi
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IDC127 6 1/4 inci (158.8mm)
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Tricone bits mai sayarwa IAC127 7.5 inci (190mm)
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Hakowa a cikin hannun jari IDC127 7 7/8 inci (200mm)
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API rig hakowa bits IAC127 8 1/2 inci (215mm) don dutsen mai wuya
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Tricone bits a cikin hannun jari IDC127 8 3/4 inci (222mm)
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API niƙa haƙoran haƙora a hannun jari IDC127 9.5 inci (241mm)
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Rangwame tricone bits IDC127 9 5/8" (244.5mm)
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Juyawa shugaban rig IDC127 9 7/8" (250.8mm)
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3 Cones nadi ragowa IDC127 11 5/8" (295mm)
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IDC127 13 5/8 ″ (346mm) a hannun jari