Pilot-zaburnik unique design.
Efficiency and speed of passing of a well allow to increase an arrangement of hard-alloy plates (in comparison with analogs), wear in use is also reduced.
Is advanced analog 66-06.01.300A - a zaburnik with plates of a firm alloy.
It can be used as a part of drills of series:
B1-010606; B2-010207; B2-010211; B1-010203; B1-010213; B2-010201.It can be used as a part of drills of series: BL (BK-01203), B-01701, BKM.