The CRAFTSMAN CMXGZBF7124336, 36 in. spike aerator will have your lawn looking better in no time. Aeration loosens the soil to allow air, water, & nutrients to reach the root system. The best time to aerate your lawn is in the spring, because it opens up the compacted soil brought on by cold winters. The spike aerator has 9 galvanized spike disks to penetrate the soil easily up to 2-1/2 in. The 40” working width of this spike aerator maximizes the affected area. The aerator spike come pre-assembled, which saves valuable assembly time. You can add up to 90 lbs. to the weight tray for increased soil penetration. The universal Hitch fits any lawn tractor, regardless of brand and this spike aerator comes with a 3-Year Limited Warranty