Upgrade your precision machinery with these high-quality miniature ball bearings. This 10-piece set of metal sealed bearings is specifically designed for applications requiring smooth, reliable operation in compact spaces. Perfect for quadcopters, 3D printers, and other small mechanical devices, these bearings feature a robust metal construction that delivers consistent performance under demanding conditions. The sealed design keeps dust and debris out while maintaining optimal functionality. Their precision engineering ensures quiet operation even at high speeds, while the lightweight yet durable construction makes them ideal for applications where every gram matters. These versatile bearings can be integrated into various mechanical projects requiring dependable rotary motion in a small form factor. Whether you're building a custom drone, upgrading your 3D printer, or working on other precision projects, these miniature bearings provide the reliability and smooth operation needed for optimal performance.