 
	 
	  | Product Specification | |
| Type specification(inch): | 12 1/4 | 
| Type specification(mm): | 311.1mm | 
| IADC: | 517 | 
| Additional features: | G | 
| Formation: | Soft Formation of Low Crushing Resistance and High Drillability | 
| Drilling condition: | rotary drilling、high temp.drilling、deep drilling、motor drilling | 
| Bearing Type: | journal bearing | 
| Total teeth count: | 122 | 
| Gage row teeth count: | 48 | 
| Number of gage rows: | 3 | 
| Number of inner rows: | 8 | 
| Journal angle: | 33° | 
| Offset: | 9.5 | 
| API connection(REG pin): | 6 5/8 | 
| Weight on bit(KN): | 109-327 | 
| Rotary speed(Rpm): | 300-60 | 
| Recommened upper torqueKN.M: | 37.93-43.3 |