The Belnotelt Sealed Double Row Ball Bearings 6903-18 2RS Steel are a powerful and reliable choice for replacing damaged or worn-out parts on your cycling front wheel hub. These bearings come in a non-standard size, making them suitable for various wheel rim widths. The sealed design ensures zero maintenance, with no need for lubrication, and a longer lifespan compared to open bearings. Constructed from high-quality steel, they provide superior durability and smoothness during the cycling journey. With a diameter of 18x30x7mm, these bearings are perfect for bike enthusiasts seeking a superior alternative to traditional bearings. Trust the Belnotelt brand for exceptional performance and reliability.