TCI bits series:

Metal-face sealed bearing TCI Bit
Cutting Structure: The durability of tungsten carbide inserts bits are improved with new formulas and new techniques for insert bit.
Gauge Structure: Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.
U can choose the size below


This type of tricone bits have optimal bearing design, it can be working stably in low WOB, and high quality tungsten carbide on suiface of cones and gauge make a good wear resistance, largely extend the working life of bit.

More picture you may be interested in