These high-quality Rubber Shielded Ball Bearings make ideal replacement parts for your ARRMA vehicle. 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 - High-quality rubber shields for enhanced protection against the elements - Keeping dirt, water, and dust out, and lubrication in, means more time bashing and less time wrenching SPECIFICATIONS: Inside diameter: 5mm Outside diameter: 10mm Thickness: 4mm Includes 2 x Ball Bearing 5 x 10 x 4mm Compatibility: Arrma Big Rock 3S BLX Arrma Granite 3S BLX Arrma Granite 4x2 Boost Arrma Granite 4x4 Mega Arrma Infraction MEGA Arrma Infraction V3 3S BLX Arrma Senton 3S BLX Arrma Senton 4x2 Boost Arrma Senton 4x4 550 Arrma Typhon 3S BLX Arrma Typhon 4X4 550 Arrma Vendetta 3S BLX Arrma Vorteks 3S BLX