In order to drill a hole in the beaten lawns and to cut old roots, water and oxygen are fed, the breathability is better, and lawns are activated! The beaten soil becomes soft that encourages germination of bud and available to keep lush lawns.
It is very easy to use. The center has two roots and the two ends have a structure (tubular) that makes holes in the soil. However, there are times when it is difficult for two of the end to get stuck with throbbing and getting out.
The grass asked that drilling is necessary for ventilation, and until then, he was doing striking a peg of a tent to pull out. However, it is quite a tough task, so I purchased this item and it became much easier than I expected. Those who stab you may be able to use weight and momentum, but sharpness sharpens and enters the lawn with sputs. It is easy as you can use both hands. When it is difficult to escape occasionally it will come out as soon as it gently fits with the grin. I have only used it a few times, but I am wondering how long this use feeling will last.