... Name: Sliding Window Wheel Roller with Ball Bearing WU-30/10 (Doors & windows wheel, door wheel, nylon wheel, plastic wheel, ... ) Unit weight 0.02 kg Temperature range from -20 °C Temperature range to 60°C Tread & tyre U-grooveProduct Detail Images: Product Features ... 5. Main Markets: America, France, Canada, korea 6. Supply Ability: 10,000 pcs per week Our Factory:Other Items: Following pictures ...