The knife ring rollers consist of a galvanised central roller drum and a knife rail with associated mounting parts. They are ideal for operation on heavy and clayey soils where the knife rings provide an intensive clod cutting effect and a smooth travel. On the other hand, they are also suited to very light soils where normally the soil would bulldoze in front of an enclosed cylinder resulting in it blocking.

The application range for the WW angle profile roller (diameter: 580 mm) is primarily on stone-free, medium to heavy soils where it very effectively cuts the clods. Due to its angled profile, it is characterised by a good cutting and crumbling effect. The wedge shaped rings provide a reconsolidation in strips with a good effect also at depth and a good surface crumbling. As an option, a sprung knife system is available. These knives, with their adjustable intensity, then clean the gaps in between the rollers and additionally cut any further clods.