1. All sizes available 2. Large inventory on hand 3. Low cost ... the different formations you may encounter. 2. Large inventory on hand ranging from 2-7/8” through 26” to meet ... 5/8,4 1/2,4 5/8,5 1/2,6 ,6 1/2,6 3/4,7 ... 7/8,8 1/2,8 3/4,9 1/2,9 5/8,9 7/ ... 14 3/4,14 5/8,16,17 1/2,20,22,23 ,24,269. Models: HA, ... ,SKF,A Series, etc.Please contact us for more information! 14 1/2" IADC116 milled tooth rock bit