| Sample Number | 14711 | Roller cone bit(Tricone bit) | |
|---|---|---|---|
 |
Extraction ground |
Japan .Akita/ - - - |
|
|
Comment |
- - - |
||
| Exhibition place | Third floor Section8 | ||
| Display Number | |||
| Sample Number | 14711 | Roller cone bit(Tricone bit) | |
|---|---|---|---|
| |
Extraction ground |
Japan .Akita/ - - - |
|
|
Comment |
- - - |
||
| Exhibition place | Third floor Section8 | ||
| Display Number | |||