Is your lawn gasping for air? Over time lawns become compacted and thatch builds up to create a barrier keeping water and air from reaching the roots. Healthy roots are essential to good lawn growth. The Yard Butler Lawn Spike Aerator has four strong spikes that loosen compacted soil and penetrate thatch so air, water and fertilizer can promote vigorous root growth and strengthen tolerance to drought and heat stress. Spike aeration is also great to prepare an existing lawn for re-seeding or over-seeding and for fertilizing. The heavy duty powder coated steel is guaranteed to last a lifetime.• Four 3" spikes loosen compacted soil and penetrate thatch• Promotes vigorous root growth, strengthening tolerance to drought and heat stress• Reduces soil compaction, water run-off and puddles• Steel; 37 inches tall, 9 inches wide, weighs 4 lbs.