These high-quality ball bearings provide replacement parts for your kit supplied items.Features:Premium ball-raced bearings for ultra-smooth operation in all conditions - Precision manufactured for fast and easy fit and consistent servicing - Manufactured to consistent tolerance for safe and secure assembly - Double protective shields to provide added durability SPECIFICATIONS: Inside diameter: 10mm Outside diameter: 15mm Flange outer diameter: 16.5mm Thickness: 4mmIncludes:2 x Flanged Ball Bearing 10x15x4mm