PRODUCT SPECIFICATIONS
Size	8-1/2 inch (Φ215.9mm)
Model number	8-1/2HS6523SA
Body type	High Manganese Steel
Number of blade	5
Primary PDC cutter size	1613
Number of nozzle	5
Diameter of nozzle	18 mm
Gauge length	50.8 mm
API connection	API 4-1/2 REG
Make-Up Torque(KN.m)	16.3~21.7（4.79）KN·m(Mpa)
Suitable formation	Abrasive formation
Weight On Bit(WOB)	4-16 T
Rotary Speed(RPM)	60-240r/min
Application	Oil & Nature Gas
Quality	High Level
Package	Iron Case
MOQ	1 Piece
Certificate	ISO 9001
OEM	Yes
Customized Size	Yes

Characteristics:

1. The crown surface of the bits is medium cast surface which makes the bit suitable for normal hard to hard and strong abrasive formation.

2. The conical surface is shallow, so the bit has good orientation, good cleaning effect and strong aggressivity.

3. The moderate distance between the nose part and the center makes the bit's crown have lager area to resist impact.

4. The angle of the PDC cutter is 20-27°,which makes the bits have strong abrasive and impact resistance.

5. The design of the gauge's PDC cutter exposure can increase the cutting area in the gauge part. This design will be better protect gauge effect and abrasion resistance.

6. The mid-length gauge surface is welded by single-row PDC cutter gauge teeth to enhance the abrasion resistance and be better protect gauge effect.At the meantime, the design can increase the stability of the bits.