Made from high-strength aluminum alloy materials our crossbar can withstand severe weather and can bear almost 165 lbs of objects per crossbar. The ends of the crossbar adopt a 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 crossbar. Additionally it can be easily mounted on most vehicles and the distance between the rain grooves is between 42.91in-44.88in to carry bikes kayak racks cargo frames cargo boxes snowboards surfboards etc.