6 1/8 in MDiZ516(155.575 mm)

Product ID: 66680A0001

Design Specifications

Total Cutters19
Cutter Size13mm (1/2 in), 16mm (5/8 in)
Face Cutters(10) 16mm
Gauge Cutters(5) 13mm
Cone Cutters(4) 16mm
Blade Count5
Nozzles3 Standard Series 40N, 2 Standard Series 60N
Bit Connection3 1/2 Reg
Junk Slot Area (sq in)7.585
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 7 3/16 in Overall: 10 7/8 in
Fishing NeckDiameter: 4 1/2 in Length: 2 13/16 in

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit2,500 To 19,000 (lbs)
1,136 To 8,636 (daN)
1 To 9 (Tonnes)
Flow Rate (GPM)150 To 300
Hydraulic Horsepower (HSI)1 To 6
Recommended Make-up Torque6,600 To 9,850 pound ft
The operating parameters listed here are general parameters, please contact your local Smith Bits representative for precise recommendations for your individual well.



The Stinger element features a highly distinctive conical geometry with a thick synthetic diamond layer, engineered to resist high impact loads and abrasive wear for superior durability.

The center location of the Stinger conical diamond in the bit enhances its stability to mitigate whirl and other artifacts that waste energy and reduce ROP. The Stinger element also provides an efficient mechanism to drill the very center of the borehole.

The PX feature places thermally stable diamond inserts (TSP) on the gauge to maximize gauge retention and extend bit life.

Bit design is available with advanced ONYX cutter technology. This includes the next generation ONYX II cutters that have superior abrasive wear and exceptional resistance to thermal degradation, enhancing cutter durability for increased footage drilled and faster ROP.