RC enthusiasts and hobbyists, this 10-pack of FastEddy bearings is a great value for maintenance and upgrades. These are MR128-2RS bearings, which means they have rubber seals on both sides (the '2RS') to keep dirt out and grease in. The size is 8mm inner diameter, 12mm outer diameter, and 3.5mm wide. They're made from high-quality steel/chrome and are known in the hobby community for being reliable and durable. Perfect for replacing worn-out bearings in RC cars, trucks, boats, as well as for use in robotics projects, bicycles, skateboards, and all sorts of other small machinery. Having a pack of 10 means you can service multiple wheels or components at once. Just make sure this size matches what you need for your specific model or project. A must-have staple for any hobbyist's workshop bench.