Arrma 12x18x4mm Ball Bearing (2)

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 super-consistent tolerance for safe and secure assembly operation - Double steel protective Shields to provide added durability Specifications: 12mm Inside diameter 18mm Outside diameter 4mm Thickness Includes 2 x 12x18x4mm ball bearings per pack