HiPicco MR128-2RS Deep Groove Ball Bearings, ID 8mm x OD 12mm x Width 3.5mm Miniature Bearings, Double Rubber Sealed Ball Bearing Pre-Lubricated Chrome Steel Z2 Lever 10pcs

I got these bearings to use in various projects I'm working on, mostly made of 3D-printed parts.You get 10 bearings in a plastic tube with a cap, which helps keep dust and contaminants off them while they're in storage.The bearings themselves have two rubber seals (the "2RS" designation). Other types of miniature bearings might have the designation "ZZ" or "2Z", which refers to having metal seals/shields. While the rubber seals will provide better sealing over the metal shields, the rolling resistance is likely to be slightly higher. However, for my use case in hobby projects, this does not really matter.They seem well made, and are the exact size I expected, so I think this set is good value for money.

The proof of the quality will rely on me getting a project finished but, on inspection, these seem perfectly acceptable to me. Nicely finished and true to size, all very freely moving, and ideal for hobbyist purposes.

Purchased for an RC toy I am building.

These itty bitty bearings are so cute. Spin is smooth and work well for projects.

Cheap enough to keep some for spares. Decent quality, I havent had any issues after some rc bashing

Can't complain about these bearings. They are true to dimensions and roll smoothly.Ship with a storage tube.Decent quality, affordable price.

5x11x4mm bearings are one of those sizes commonly found in RC Crawlers. It's always nice to have some backups in case you need to replace one of them. These bearings fit the bill and work as intended.