Mow-Aerator MA2008 Riding Lawn Mower Aerator Tire Spikes, 2-Pack Patented system provides aeration to the lawn, bringing water and nutrients to the root system Mow your grass and aerate your lawn at the same time Will benefit your soil for root growth Powder coated to prevent rust Can be used on 20-inch x 8-inch and 18-inch x 8-inch tires