Vision MR021 BearingThis high-quality bearing is perfect for replacing the old one on your FSA/Vision hub. Measuring 24x12x6mm (MR021) in size, this is a great choice of upgrade or spare for breathing new life back into your wheel hub. Genuine Vision replacement part.Vision products were launched nearly 20 years ago at the Kona IronMan. Since then they have earned the reputation of being amongst the fastest and most aerodynamic components in the professional field. Vision components are designed using Computational Fluid Dynamics (CFD) software and verified through extensive wind tunnel testing, then proven under its sponsored professional athletes to guarantee you the highest performance.Features: Type: MR021 Compatibility: Vision 6901-RS (U1082, U2082NDS, MR021) hubs Size: 24x12x6mm Genuine Vision replacement part Manufacturer’s Part Number: 752-0307000000Buy Vision Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.