Upgraded Lockable Roof Rack 2PCS Cross Bars Made from high-strength aluminum alloy materials, our cross bar can withstand severe weather and can bear almost165lbs weight objects per cross bar. At the ends of the cross bar adopt curved shape design to effectively decrease wind noise and resistance and each across bar comes with an anti-theft lock to ensure the security of the cross bar. Additionally, it can be easily mounted on most vehicles which the distance between the rain grooves is between 42.91in-44.88in to carry bike, kayak racks, cargo frame, cargo boxes, snowboard, surfboard, etc