Alright DIYers and repair folks, check out these tiny but mighty thrust bearings! This pack comes with 10 of these F5-10M model bearings that measure 5mm on the inside, 10mm on the outside, and are 4mm thick - perfect for all sorts of small projects and repairs. They're made with steel rings and copper retainers, which is that nice silver and yellow color combo you can see. Now, these are thrust bearings, which means they're designed to handle loads that push in one direction rather than spinning super fast. They've got this cool separable design where you get the bearing ring, washer ring, and rolling ring all as separate pieces. Super handy for certain installations. Important note though - these aren't meant for crazy high-speed applications since the steel can cause some scratching at high RPMs. But for most DIY projects, small machinery repairs, hobby builds, or prototyping work, they're absolutely perfect. The spherical seat design means they can handle some misalignment during installation too, which is always helpful when you're working in tight spaces. Each bearing weighs about 16 grams, so they're lightweight but still feel solid and well-made. Great for 3D printers, small engines, model building, or any project where you need to reduce friction in a compact space. The copper retainers help with heat dissipation and overall durability. Seriously, if you're working on anything with moving parts that needs smooth operation, having a pack of these on hand can save you multiple trips to the hardware store. Quality feels solid right out of the package - no rough edges or manufacturing defects. Perfect for when you need reliable small bearings without breaking the bank.