☆ There was a chance to use it several times It needs a little power, but it does not matter for sharpness. Although it is speculation from several times of use, it is thought that there is no problem because there is sufficient durability unless it is routine for professional in preparation for an inconvenience. I feel well worth more than the price helped by this product many times.
The handle will break if you put power in, but if there is a tire of a passenger car it will not be a problem. It is cheap even if you buy reserve in price