Specialized Integrated Crank Bottom Bracket Bearing Bicycle Bearing UCFC21547 Double row ball bearings are

Double row ball bearings are made to handle both radial and axial loads - ideal for wheels that take sharp turns and everyday bumps

and brake dust

The 6307RS is a deep groove ball bearing made from chrome steel and built for long-lasting performance

This 5x9x4mm stainless steel miniature bearing is built for smooth rotation in compact spaces

and other rotating assemblies

Specialized Integrated Crank Bottom Bracket Bearing Bicycle Bearing UCFC21547 Double row ball bearings areBall Bearings for Specialized Integrated Crank SET Bottom Bracket Closures: Rubber Sealed Closure Side: Double Sided Seals Lubrication: Low Friction Grease Material: Corrosion Resistant Chrome Steel Balls: High Chromium Steel 52100 SAE Steel Balls Cage: Low Friction Steel Precision: ABEC 1 Quality Brand: VXB Quantity: Set of two Bearings