Step 'N Tilt Lawn Core Aerator 2 (All New 2013 Model) For users up to 6-feet tall. Faster and easier to use than other manual aerators. Simple step and This patented lawn aerator (U.S. Patent No. 8,714,275) makes core aeration effortless and Optional soil core container accessory (not included) may be used to collect soil cores during Aerate areas not accessible by motorized aerators. Designed for all kinds of soil including clay Some assembly is required.. 120-day money back guarantee and one-year warranty.