|  | Hard Rock Double-edge Central Disc Cutter | 
| Product Specification | |
| Size: |  17 "(432mm)   | 
| Cut corner of ring edge: |  14 - 30° | 
| Hardness of cutting ring: | low hardness、medium hardness、high hardness. | 
| Formations: Low crushing resistance, medium soft, strong abrasive layer i.e. argillite, anhydrite, cotton rock, gritstone , sandwich containing dolomite. | |