To prevent dust from entering the side grooves and curing to prevent contamination
On 2013-07-22 18:06:55
Although the thickness was not written in the catalog, I tried purchasing at the price. Using it, the thickness 0.07 mm was too thin. It seems I will be defeated if I crush a small stone. I was looking for something cheap because it is disposable, so the price is satisfying but it is a little disappointing.