Upgrade your ride with this Alluminum Alloy Bicycle Seat Post, built for strength,comfort and durability. Available in sizes 25.4mm, 27.2mm, 28.6mm, 30.4mm, 30.9mm and 31.6mm, this lightweight, rust-resistant seat ost fits most road, mountain and hybrid bikes. Easy to install and adjustable for maximum stability,it’s the perfect replacement spare part for any cyclist.