Bad digging in cutting, is not there a small number of core thread? If it cracks in use and fragments fly and go down, there is a danger of serious injury. It is not a professional specification. I do not think that price is not enough. Monotaro original There is a sense of omission that looks as a whole. Good things are not cheap ya sy older feel bad I feel sorry
If I thought that the hand grinder would not shake, I found the cause. When the seal of the center hole was peeled off at the time of disposal, there were several pebbles of the grindstone between the steel plate and the seal, and the iron plate was bent as if it was pressed on it. It consisted of almost all whetstones. It can not be precise with this. I have never seen a pebbles outside the steel plate with another grinding stone made in domestic. It seems there is a problem with manufacturing process / inspection, so we ask for improvement. Just because the price is cheap, quality that can not be purchased continuously is missed.