This helps water and air get beneath the surface to improve root growth when seeding or maintaining turf.
There are three roller widths Spikng Roller are available:
12" (300mm) Wide Unit - Weight 64lbs, 30kg, 63 spikes
24" (600mm) Wide Unit - Weight 120lbs, 54kg, 126 spikes
36" (900mm) Wide Unit - Weight 180lbs, 80kg, 189 spikes