ITEM NAME:Adjustable Bicycles Saddle Suspension Device Shock Spring Steel Absorber Cy K4V2 Description 100% brand new and high quality Main Body: Special Alloy Spring Steel Clamp: 6061 Aviation Aluminum Protective Cover: Silicone Size:16*5*8.5cm Load bearing Weight: Approx. 25-150kg Applicable: suitable for mountain bikes, road bikes, Fixed Gear, etc. 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. Quality is the first with best service. customers all are our friends. Fashion design,100% Brand New,high quality! Wash the water below 30 Â ° C with warm water and do not bleach Note: 1. For reasons of taking pictures, please allow slight color differences Package Included: 1 x Bicycle shock absorber.Easy and convenient to install and use. Installed between the seat cushion and the saddle tube, great shock absorbent. 1 x Bicycle shock absorber. Main Body: Special Alloy Spring Steel. Wash the water below 30 Â ° C with warm water and do not bleach.