



9 7/8" TCI Tricone Rock Bit. Bit Size: 9.875". Rerun sealed bearing 9 7/8" Tricone drill bits. We build these bits from 8 3/4" bits that have very low hours and the strongest seals. These bits can be made with a large hole in the center for maximum circulation. 4 1/2" api regular pin. Carbide gauge and leg protection comes standard.





































The recommended 9⅞-in. (250.825-mm) Vanguard Steel-Tooth tricone drill bit drilled 6,400 ft (1,951 m) of interbedded formations at a rate that was 15% faster and 30% farther than any comparable offsets. Before being pulled for hours, the tricone accumulated more than 840 K-revs and was seal-effective. The section required one less bit trip ...
















