Description: 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. Specification: Material:Aluminum Alloy Color:Black Size:Approx.16 x 8.5 x 5cm/6.30 x 3.35 x 1.97inch Protective cover material: silicone Bear weight: about 25-150kg Package Includes: 1 Piece Bike Saddle Suspension Device Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you order
