【Premium Stainless Steel Material】: This brand new scooter rear auxiliary wheel bearing is made of high quality stainless steel material, which is corrosion‑resistant and It is not easy to break, has quality and long service life. 【High Performance】: The electric scooter wheel bearing has high performance and strong practicability, which is a great accessory for your scooter. 【High Load】: The Deep Groove Ball Bearing has high load, and it is conducive to the repair of rear wheel noise. 【Suitable For】: The Double Sealed Chrome Steel Bearing is used for repairing and replacing your damaged bearings on the rear wheels, and it is suitable for M365/1S/PRO/PRO2 electric scooters. 【Product Specification】: Item type: rear auxiliary wheel bearings; material: steel; outer diameter: approx. 28mm / 1.1in; inner diameter: approx. 12mm / 0.5in; thickness: approx. 8mm / 0.3in; product weight: approx. 41g / 1.4oz., Weight: 0.09038952742 pounds, Manufacturer: Keenso