Available models:
Steel tooth (IADC) | 111, 121,131 117,124,126,127,136,137 211,311 216,217, 227 |
TCI (IADC) | 415,435, 417,437 515,525,535,545, 517,527,537,547 615,625,635,,617,627,637,737 512,522,532,612,622,632,732 |
We are China 8 1/2"TCI tricone bit ROCK BITS DRILL BITS TRICONE BITS manufacturer offer best 8 1/2"TCI tricone bit ROCK BITS DRILL BITS TRICONE BITS OEM, ODM,service.