With only 3 bond hardensses - soft, medium or hard bond - the selection of tools gets easy. This allows quick choice of toolkit for occasional use.
Wet polishing of concrete, terrazzo (cementious and resin based) and calcerous stone.
The harder bond offers high durability allowing for longer life in wet polishing conditions.
The higher open design allows for better tooling pressure while still allowing slurry and debris to move away from the active tool area.