0 5 the ratio of the bit body length lbb to the bit diameter d can be less than 1 0 alternatively the ratio of lbb to d can be less than 0 9 alternatively the ratio of lbb to d can be less than 0 8 the ratio of the bit diameter d to the length of the bit lb can be greater than 0 65 alternatively the ratio of the bit diameter d to the length of the bit lb can be greater than 0 7 the ratio of the length of the box lbox to the length of the bit lb can be greater than 0 4 the ratio of the bit body forward of the threads lbb to the length of the bit lb can be greater than 0 4 alternatively the ratio of lbb to lb can be greater than 0 45 the ratio of the length of the box lbox to the length of the bit lb can be greater than 0 4 alternatively the ratio of lbox to lb can be greater than 0 45 and in one embodiment is greater than 0 5 in another embodiment the length of the bit is less than 2 u00bd times the length of threads on the api connection and in another embodiment the bit is less than two times the length of the threads on the api connection in another embodiment a bit.