By means of the high resistance steel spikes it penetrates the ground by making a series of big and deep holes, 15 cm far one from each other. This allows water, light and nutritive substances to reach the lawn roots. With this kind of working in the long period your be much more beautiful.
By moving the lever on the working position, spikes will go deeper than the wheels level, penetrating the ground.
For this spike aerator good functioning, it is recommended to put weights (also simple bricks) on the upper plate in order to have the pikes go deeper on the soil due to the higher weight. Anyway the side wheels fix the spikes penetration due to their height. This product is suitable to work on hard soil.