... backward, turn sensitive; the perfect combination of chain and gear, drive efficiency up to 90%, the normal speed 8-12 miles per ... hour, up to 18 kilometers per hour, very entertaining. 3. Prevent rust and corrosion: Sealed gear box, ... :Used to store drinks, food, footwear, clothing and other small items, convenient and practical.9.Long life: Impact resistance, long life, an investment, ...