I sharpened some knives and scissors as a test, but it seems to be effective. The way to sharpen knives and scissors is different, so it's much better to print instructions on using a label printer and attach them.

The price is reasonable, and the delivery is good because it is domestic. Once you use it, it is convenient. It doesn't take much force either. I don't know how long the durability will last, but since the abrasive parts are small, I'll have to test it out. I used 2, tried one right away, and bought one as a spare. The big advantage of this product is that it can be used with scissors, so if it was used for stationery or small scissors, it would have been discarded, but since it can be used for a longer time, I think that is a plus factor in the recommendation. It's nice to be able to use a knife for its intended purpose.

I used to grind with a whetstone, but now it's nice to hold it comfortably, pull it, and push it.