| Product Specification | |
| Type specification(inch): | 12 1/4 |
| Type specification(mm): | 311.1mm |
| IADC: | 637 |
| Additional features: | G |
| Formation: | High pressure resistance,medium hard formation with hard and thick interlayer. |
| Drilling condition: | rotary drilling、high temp.drilling、deep drilling、motor drilling |
| Bearing Type: | journal bearing |
| Total teeth count: | 260 |
| Gage row teeth count: | 75 |
| Number of gage rows: | 3 |
| Number of inner rows: | 14 |
| Journal angle: | 36° |
| Offset: | 6.5 |
| API connection(REG pin): | 6 5/8 |
| Weight on bit(KN): | 156-373 |
| Rotary speed(Rpm): | 220-40 |
| Recommened upper torqueKN.M: | 37.93-43.3 |