Base Info
- Model NO.：roller cone 8 1,2′′ IADC 637
- Standard：JIS, AISI, API
- Length：Jobber-length
- Type：Twist Drill Bit
- Material：Tungsten Carbide
- Superior Drilling Tools：Superior Roller Cone
- Trademark：superior
- Transport Package：Wooden Case
- Specification：accordingly
- Origin：Hejian, China
Description