Aluminum alloy spring steel, not easy to get deformed, wear-resistant and high toughness
Silicone protective cover, good adsorption and high stability.
With engraved scale on sides, you can adjust position.
Easy and convenient to install and use.installed between the seat cushion and the saddle tube, great shock absorbent.
Suitable for most bike, mountain bike, road bike, folding car,universal bikes.