Soft 100-200 IADC series
Tricone roller bits for drilling of soft formations (100-200 IADC series) are distinguished by most high performance cutting structure of chisel tungsten carbide inserts with relatively big offset from cone shell, which allows to get high drilling rate in soft and medium-soft rock formations, such as aleurolite, soft limestone, dense clay, medium-hard shale etc. Bits of this series have protection of shirttail with tungsten carbide inserts, which increases wear resistance while drilling highly abrasive rocks.

Medium 300-500 IADC series
Tricone roller bits for medium (300-500 IADC series) rock formation drilling are distinguished by cutting structure consisting of chisel tungsten carbide inserts on gauge rows of cones and conical inserts with relatively small curve radius on inner rows. It allows these bits to be used for drilling of rock formations such as apatite, gabbro, coal, silicified magnesite etc., with quite high drilling rate. Bits of this series also have protection of shirttail with tungsten carbide inserts, which increases wear resistance while drilling highly abrasive rocks.

Hard 600-700 IADC series
Tricone roller bits for hard (600-700 IADC series) rock formation drilling are distinguished by cutting structure fully consisting of conical tungsten carbide inserts with relatively small curve radius. Such cutting structure layout allows these bits to be used for drilling of rock formations such as medium- and fine-grained basalt, fine-grained granite, siliceous limestone, porphyry etc. Bits of this series also have protection of shirttail with tungsten carbide inserts, which increases wear resistance while drilling highly abrasive rocks.

Very Hard 800 IADC series
Tricone roller bits for very hard (800 IADC series) rock formation drilling are distinguished by more crack resistant cutting structure consisting of tungsten carbide inserts with bigger curve radius (spherocon-shaped inserts), and gauge rows of cones may have spherical tungsten carbide inserts. It provides efficient drilling of harder rocks such as coarse- and medium-grained granite, quartz sandstone, hard-grained greenstone and gabbro etc. Bits of this series also have additional protection of shirttail with tungsten carbide inserts and hardmetal surfacing, which increases their durability while drilling hard and highly abrasive rocks.