Grass is a living thing that needs air and water to grow. Regular mowing and other outdoor activities in the garden during the summer months lead to compaction in the surface layer of the lawn. Drainage is impeded and it is harder for water , air and fertiliser to penetrate to the roots. The Greenkey 30cm rolling lawn aerator provides a fast and efficient way to keep your lawn aerated, helping the lawn to breathe and take in essential nutrients. The large 300mm (12″) width enables you to cover your lawn quickly and easily, and the thirty 45mm (2″) spikes provide deep and even aeration. Best used as part of your lawn care routine in Spring and Autumn. For best results, use when the ground is soft. Very quick to assemble. Spare parts available. When using, always push the aerator in front of you. *This aerator is a tool and has sharp components. DO NOT allow children to play with the aerator and store safely out of reach when not in use*. When carrying the aerator it is advisable to hold the lowest section of the handle.