Feature:1. Aluminum Alloy: This car roof bike rear wheel bracket is made of aluminum alloy, which is strong and durable. Great for storage or transport.2. High Performance: Car rooftop bike rear wheel rack is wear resistant and durable, with high load carrying capacity, durable and stable.3. Protective Features: Car rooftop carrier avoids scratching your bike forks or the roof of your vehicle, protecting your car paint from scratches and damage.4. Applicable: Car rooftop bike rear mount can be installed in garage etc. for storage. Can be mounted on a truck bed, van or trailer for transport.5. Multipurpose: Bike racks can be used in a variety of vehicles such as cars, coupes, hatchbacks, SUVs, trucks, and more. Meet your needs for transporting your bike during road trips or camping excursions.Specification:Item Type: Car Roof Bike Rear Wheel BracketMaterial: Aluminum AlloySize: 35 x 75 x 108mm: Approx. 1.4 x 3.0 x 4.3inApplicable: Suitable for Carrying Bikes on Car Roof Racks, Fixing the Rear Wheels of Bikes.Package List:4 x Screws4 x Sliders1 x Strap1 x Hex Wrench1 x BracketNote:Please allow some errors due to manual measurement.