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Three-Wing and Four-Wing
Three-wing bits tend to drill faster whereas four-wing bits are longer lasting, more durable, and drill a straighter hole.
Regular Step and Heavy Step
Regular Step bits have smaller cuttings whereas Heavy Step bits are more durable and are used in harder formations. Heavy Step bits have longer and wider steps and contain more carbide for cutting. The quantity of steps is largely determined by the size of bit.
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Bits |
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In-Stock Sizes |
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Available Threads |
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Three-Wing and Four-Wing Regular Step |
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37/8” – 26” |
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23/8”, 27/8”, 31/2”, 41/2”, 65/8” API Regular Pin |
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Three-Wing and Four-Wing Heavy Step |
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51/2” – 26” |
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23/8”, 27/8”, 31/2”, 41/2”, 65/8” API Regular Pin |
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Three-Wing and Four-Wing Regular Step Kelly Bit |
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37/8" – 26" |
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MHJR, MHR, FEDP, IF |
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Three-Wing and Four-Wing Heavy Step Kelly Bit |
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37/8" – 26" |
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MHJR, MHR, FEDP, IF |
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