Specifically designed for sleek road bikes turn your road racer into a weekend tourer with this lightweight rack it mounts to your seat post with ease 15lb carrying capacity al 6061 t 6 aluminium constructiondesigned for use with rx type trunk bags other makes may fit supplied with or without detachable side frames includes shims to fit all seatposts integral bungee cords hinged seat post clamp with m6 stainless steel bolts compact size perfect for road bikes weight 380390gms available