1.This type of bits are used in high press resistance hard formation, limestone,anhydrite,chert,dolomite,firm sanstone,etc.,It can work in a low RPM and higher WOB with stable drilling speed.

2.TCI buttons are used ot protect gauge and cones so that to extend the working life of bit.

3.TCI buttons distributed and bearing system optimal design largely improve the woriking efficiency and stability of breaking down .