- This general drilling bit type is available with a large variety of tooth design and bearing types and, thus, is suited for a wide variety of formation characteristics.
- As the rock type gets harder, the tooth length and cone offset must be reduced to prevent tooth breakage; the drilling action of a bit with zero cone offset is essentially a crushing action.
- Series 1,2 and 3 are reserved for milled tooth bits in the soft, medium and hard formation categories, respectively.
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