Swagman Standard Bar Adapter. Attach this Adapter on to children"s bikes or sloping top tube bikes with the easy pop-pin system for easy towing! Once Adapter is attached, your bike will fit perfectly on a standard rack. Made with cold-rolled steel for long-lasting durability. Features quick-release latches that fit around the seat post and stem post of your bike. Telescoping bar allows nearly ANY bike to fit! Comes complete with an extra vinyl hanger for use with no-rise handlebar stems. Order yours today! Swagman Standard Bar Adapter