Dome PDC inserts consist of multilayer structure of diamond and transition layer, improving impact resistance greatly, which makes dome PDC inserts the best alternative to be applied in roller cone.

Priority for rear row teeth, auxiliary for main teeth (only in soft to medium-hard broken formations). As rear row teeth, it buffers impact, protects main teeth and prevents gravel from damaging the main cutting part.

Flat and smooth tooth surface with large contact area, delivering high cutting efficiency and outstanding wear resistance. Uniform force bearing avoids local wear; high processing precision and wide adaptability make it the most widely used basic tooth type.

Priority for main teeth, also available for rear row teeth (auxiliary cutting). As main teeth, it crushes formation rocks quickly with high cutting efficiency; as rear row teeth, it assists cutting and plays a certain gauge protection role.

Sharp tapered tooth tip with extremely strong penetration, reducing drilling resistance and breaking medium-hard to hard formations quickly. Tapered structure disperses stress effectively, with excellent impact toughness to avoid chipping and fracture.

Only for main teeth (not recommended for rear row teeth). Its core advantage is sharp penetration for hard formation crushing; it provides stable installation with perfect fit to bit tooth grooves.