 
	  | Product Specification | |
| Type specification(inch): | 4 1/2 | 
| Type specification(mm): | 114.3mm | 
| IADC: | 217 | 
| Additional features: | G | 
| Formation: | Medium to Medium Hard Formation of High Crushing Resistance | 
| Drilling condition: | rotary drilling、high temp.drilling、deep drilling、motor drilling | 
| Bearing Type: | journal bearing | 
| Total teeth count: | 72 | 
| Gage row teeth count: | 41 | 
| Number of gage rows: | 3 | 
| Number of inner rows: | 4 | 
| Journal angle: | 36° | 
| Offset: | 5 | 
| API connection(REG pin): | 2 3/8 | 
| Weight on bit(KN): | 57-137 | 
| Rotary speed(Rpm): | 300-60 | 
| Recommened upper torqueKN.M: | 4.1-4.7 |