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 black ceramic (silicon nitride) balls for optimal durability and efficiency. The dual rubber seals (2RS) protect against dust and debris while retaining crucial lubrication. The specialized nylon cage ensures smooth operation and proper ball spacing. These bearings excel in high-speed applications, particularly in bicycle components where their reduced weight and superior wear resistance provide a competitive edge. The ceramic ball construction offers excellent electrical insulation properties and enhanced performance in challenging conditions. Pre-lubricated with precision grease, these bearings deliver reliable, low-friction operation. Perfect for demanding applications requiring precise, efficient motion in a compact form factor.