4Pcs 6900 2RS CB 6900 Hybrid Ceramic Bearing 10x22x6mm Bicycle Bottom Brackets & Spares 6900RS Si3N4 Ball BearingsHigh hardness and toughness: Bearing steel is a high-quality steel that is specifically designed for bearing applications. It is characterized by its high hardness and toughness, which makes it an excellent choice for applications that require high load-bearing capacity and durability. Design:This high-performance bearing features inner and outer races machined from hardened stainless steel and polished balls made of premium chrome steel for incredibly smooth, reliable operation even under extreme loads.Versatility: These bearings are widely used in a variety of small machinery applications, including skateboard wheels, inline skates, and electric motors.Easy Installation : The compact integrated corrosion resistant stainless steel construction allows for quick press fit installation into tight spaces without the need for fastening hardware or bonding agents.Superb Performance : The meticulous hand-finishing and quality craftsmanship provide virtually frictionless, vibration-free and whisper-quiet spinning, making this bearing the smart choice for the most critical industrial equipment where failure is never an acceptable option.TECHNICAL SPECSA ceramic hybrid bearing is a combination of ceramic balls and bearing quality steel rings. Which combine hardened steel rings with rolling elements made of high-performance ceramic materials, are an increasingly popular option for demanding applications.Model: 6900 2RS CBStructure: Deep GrooveBall Material: Chrome Steel &Hybrid CeramicGrade ABEC7Bore Dia d 10mmOuter Dia D22mmWidth B: 6 mmClosures: Sealed (2RS)Lubrication: GreaseClearance: C0