Purchased (50 yen without stopper, 67 yen with stopper) because this part number was cheaper. Things that were not lubricated were delivered. It feels like the same thing as the part number which is not cheap (MSB - 50 of 01078053 is 119 yen, MSB - 50S of 01078062 is 134 yen). Considering the price, it is profitable. We changed the equipment that was using W3 / 8 to this (I just passed through the spiral tap of M10P1.5 which gave a tapping paste by scraping with the draft of Φ 8.7).
In order to attach it to the furniture I made, I was looking for a caster with a stopper in a bolt style, but it was a good furniture product. Cost performance is also good, rolling is comparable with that made by other companies.
Although I purchase it here regularly, because the floor of the site is concrete, the wheels will decrease soon. I hope this type of rubber wheels should be available ... Is there any choice for this price? It is!