Elevate your cycling performance with these premium hybrid ceramic ball bearings. Featuring a 24mm inner diameter, 37mm outer diameter, and 7mm width, these MR24377 2RS bearings combine chrome steel rings with advanced silicon nitride ceramic balls. The dual rubber seals protect against debris while retaining optimal grease lubrication. The nylon cage ensures smooth ball guidance and operation. These bearings excel in high-performance applications, offering reduced friction, superior wear resistance, and excellent durability compared to standard steel bearings. The distinctive blue seals not only provide protection but also add a professional aesthetic touch. Perfect for precision bicycle applications where reliability and performance are crucial. These bearings maintain their integrity under demanding conditions, making them an ideal choice for serious cyclists and mechanical applications requiring precise, dependable rotation.