Swagman DLX Bike Bar Adapter for Storage /Bike Racks 22.5-30" -Soft Vinyl-coated hooks prevents scratches or damage on bicycle -Used for Women's ,Children, and Alternative Framed bikes-Spring loaded tube allows for easy extension to ensure snug fit on most bikes-Easy Push-button hooks quickly allow you to mount around Bike's seat and handlebar stemThe DLX Bar Adapter from Swagman allows you to use bikes with sloping or step-through frame designs on bike racks that require a horizontal crossbar. Both sides of the bar open up wide for ease of use, to mount on the stem and seat post of your bike. The DLX Bar Adapter extends from 22.5" to 30". (For longer frame lengths, please consider the Cruiser Bar Adapter #63999, which features an extended length)