The GT 214 works the same as the GT 210 Vibe Spiker. In stead of spikes, the GT214 is equipped with very thin slicer blades. Due to the vibration (caused by the driven cam shaft), the blades cut easily through the turf and leave  a very clean cut upto 35 mm deep  (1-1/2”).  The side-to-side slit distance is 42 mm (1.65”).