Item DescriptionFeatures:1.Easy Installation & Replacement2.Durable & Sturdy, 100% Weather Proof3.Never Rust, Extendable LengthSpecifications:1.Brand New2.Fitment:Fit All Seat Posts between 25.4mm to 32mm3.Material:High grade Aluminum Alloy4.Size:Length:13 inch (Maximum can extend to 18 inch)5.Width: 4.75 inch6.Weight:about 650g7.Max Capacity:10 kgs / 22 lbsPackage Included:1 x Quick Release Extendable Rear Bike Bicycle Rack