Colwelt Lawn Spike Aerator, Gardening Lawn Aerator for Compacted Soils and Lawns, Non-slip T-Handle Grass Spike Aeration with Four 9cm Solid Steel Spikes, 96cmWHY YOU NEED THIS LAWN SPIKE AERATOR grass roots need air, water and nutrients to grow thick, deep and strong. When soil becomes compacted, even slightly, it inhibit the flow of the essentials that support thicker, healthier turf growth. Aeration creates holes down into the soil to alleviate compaction so air, water and nutrients can reach grass roots. GETTING YOUR LAWN GREENER AND HEALTHIER this gardening lawn aerator has 4 longer sharp spikes, 9cm