Review on WMYCONGCONG 4X9X4Mm Flanged Miniature Shielded by Eric Kim

I use them for small gears. I really don't need that. but in the end there is one more goal. Hmm, they work great, apart from being a bit oversized in each pair. Which is quite normal for this price and in my opinion does not affect the performance. Just don't push the axle/shaft through the hole. The ball can be crushed very easily under pressure. my fault. 3 broke without realizing until I flipped them over and they were rough. I will definitely order more.