The Suspension Seatpost by Ganopper is a high-quality aluminum alloy seatpost with a diameter of 27.2mm, making it compatible with most bicycle models. The sleek black color and suspension seatpost design provide a comfortable and smooth ride for cyclists. This set includes one seatpost, weighs 2lbs, and is ideal for universal bike compatibility. Made in Taiwan, this unit is a reliable and durable component for enhancing your cycling experience. I ship out FAST via USPS Ground Advantage.