Pulling cut thanks to the spiral arrangement of the planer knife. Quick knife change with just three screws. Optimal fit of the planer knife, no adjustment of the knife projection necessary. Perfect roundness. Replacement planer knife for the Rustikal planing head HK 82 RW in the coarse version Welle. This creates a concave planing pattern. By using it in a spotty, uneven manner, surfaces with a hewn or chopped appearance can be imitated.