Experience superior performance with this premium 6805 2RS hybrid ceramic ball bearing. Featuring a 25mm inner diameter, 37mm outer diameter, and 7mm width, this bearing combines chrome steel rings with advanced silicon nitride ceramic balls. The dual-sided rubber seals provide excellent protection against dust and debris while maintaining smooth operation. The nylon cage ensures proper ball spacing and reduced friction. These bearings excel in high-speed applications, particularly in bicycle components, thanks to their lightweight construction and outstanding wear resistance. The ceramic balls offer exceptional durability and minimal friction, while the chrome steel rings provide structural integrity. Pre-lubricated with high-quality grease, these bearings deliver reliable performance right out of the box. Perfect for demanding applications where traditional steel bearings may not meet performance requirements, these hybrid ceramic bearings represent the pinnacle of bearing technology.