Universal Parts 608-2RS Wheel Bearing (Inner Diameter: 8mm, Outer Diameter: 22mm).Fits a wide range of vehicles including Razor Kick scooters, Ripstick, Razor Electric Scooters, Currie, Bladez, Izip, and many more. Also used on many mobility scooters and power chairs including the Hoveround MPV4, MPV5, Teknique FWD, C.T.M. Homecare HS-2800 and Go-Go Elite Traveller.