Delta Adjustable Crossbar Top Tube Frame Adapter: Black. The Crossbar Substitute works as a top tube with non-traditional style frame designs for easier rack mounting. For use with "hang-on" type car racks Quick-release clamps allow for quick and easy adjustment Thick rubber coating protects bikes finish Weight limit is 50lbsDistance limit from seat post to stem: max: 32.25" min: 23"
