Compacted soil not only increases thatch buildup but also reduces the amount of water and nutrients your grass receives. Brinly's 40 in. Tow-Behind Spike Aerator is the perfect tool for loosening soil and allowing your lawn to breathe. This durable, heavy duty aerator features 11 galvanized steel stars that perforate the soil up to 2 in. deep. And because each 8 in. Dia star rotates independently and continues revolving during tractor turns, you'll make less passes. The 14-Gauge steel, 150 lb. capacity weight tray allows for additional weight to be added for maximum penetration in hard soil.