Universal Roof Rack Cross Bar Car Wagon SUV Luggages Material: Sluminum and plastic / Adjustable length Coated for corrosion resistant / Can be use with other roof accessories, such as bike racks, snowboard racks, or roof sacks. Durable clamp with lock system / Each clamp has its own built-in lock Tie down loop on each end / Total load capcity: 150 lbs / 2 Keys Cross bar length: 50" / Inside measurement: 1 1/4" x 2" width x 44" long