Step 'N Tilt Lawn Core Aerator 2 with Container (All New 2013 Model) For users up to 6-feet tall. Faster and easier to use than other manual aerators. Simple step and tilt motions; no pulling action that causes back and shoulder aches. This patented lawn aerator (U.S. Patent No. 8,714,275) makes core aeration effortless and enjoyable. A true core aerator that alleviates soil compaction problems. It can be used near solid objects where motorized aerators are unable to reach. This 2013 model may be used with either 2 or 4 tines. Use the detachable container to collect soil cores. Ergonomic design, natural movements, self-paced aerobic activity. Designed for users up to 6-feet tall. 120-day money back guarantee and one-year warranty. Some assembly is required.