Hollywood Racks Bike Frame Adapter Pro (Black) Fits a variety of bike sizes with telescoping tube that adjusts from 21" to 28" long; Ideal for kids bikes and ladies frames Attaches to your bike's seatpost and handlebar stem post Easy push to operate pin and interlocking gate keeps each clamp closed Protects your bike's finish with non-marking plastic clamps Constructed of rust-resistant, sturdy steel with black powder coat finish Artificial top tube for your bicycle; ideal for women's bikes and bikes with non-traditional frames Interlocking frame hooks attach to seat post tube and handlebar stem Device has sturdy, non-twisting tubing Made to fit openings of between 14.3 inches and 27.4 inches Made in Taiwan