|  | Hard Rock Double-edge Roller Cutter | 
| Product Specification | |
| Size: | 6 1/2"(165.1mm)  | 
| Number of rows: | 2 | 
| Shape of teeth: | chisel teeth | 
| Total teeth count: | 34 | 
| Formations: Low crushing resistance, medium soft, strong abrasive layer i.e. argillite, anhydrite, cotton rock, gritstone , sandwich containing dolomite. | |