Aerating your yard with Brinly’s 40″ Transport Tow-Behind Spike Aerator perforates the soil up to 2″ deep so seed, fertilizer, and water reach your lawn’s root system. The durable, heavy-duty spike aerators comes with 11 galvanized steel stars,. Each star features 132 3-D tines, which double the strength versus flat tines, resisting bending even in compacted soil. The solid steel tine shaft, heavy-duty nylon spacers, and extra-strength double tow bar provide years of dependability so you get a green, healthy lawn each year. Each 8″ diameter star rotates independently and continues revolving during tractor turns ensuring no area goes without aeration. A fully enclosed, 14 gauge steel, 150 lb. capacity weight tray provides a stable platform for additional weight, maximizing penetration in hard soil. The transport aerator comes standard with transport wheels – perfect when crossing driveways, sidewalks, gravel paths, etc.