Usage Tips:Material: This bike rack is made from aluminum alloy material, ensuring it is sturdy, stable. It can withstand the test of time and provide you with long time use.Compact: All adapters are designed in a small size for easy portability. You can effortlessly carry all the adapters wherever you go.Secure and Scratch Free: The rack is stable enough to lock your bike on it without worrying about scratching your car. It provides a secure hold for your bike while protecting your vehicle from any potential damage.Versatile Installation: This rack can be installed in garages, homes, sheds for storage purposes or mounted on truck beds, or trailers for transportation needs.Universal Rack: This Bike Rack can be used in many vehicles, such as cars, hatchbacks, SUVs, trucks, etc. Meet your needs for transporting bicycles during road trips or camping hikes. Specification: Material: Aluminum Alloy Size Chart: 11cmx3.8cmx5.8cm/4.33inchx1.50inchx2.28inch Package Includes: 1 Set Bike Car Roof Mount Rack withAccessories Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping!