Since the casters of the office chair became useless only in one place, it is used as a replacement. The dimensions of the roller was Don Pissha, but since there was no one fitting the dimensions of the insertion part, I wound a vinyl tape around this screw part and adjusted the diameter to use it as a plug-in type. As far as I am performing the function sufficiently, well the price is cheap, so if you carry it so far, it is a letter.
It was saved by a firm commodity for the price. Although the original caster was attached to the desk of a certain fixture manufacturer, it was good that there was a product of Pittashi in the monoterror as it was broken by aged deterioration and looking for replacement parts.