Rotodairon ED130 Scarifier, pto powered scarifier /slitter The Rotadairon ED 130 for dethatching, verticutting, spiking (ground aeration through holes) and rolling operations. Four actions with a single machine When the PTO is engaged ? Dethatching Adjustable working depth from 0 to 60 mm. ? Verticutting scarifies the ground surface from 0 to 5 mm. When the PTO is disengaged or uncoupled: ?Ground rolling for deep aeration (Spiking) perfect for golf greens and sports grounds maintenance.