Description: 【Effortless Quick Release System】: Rear Bike Rack features a quick release clamp on the main beam, allowing you to install or remove the rack in seconds without tools. This makes it incredibly convenient for daily use, commuting, and easy storage when you don't need it 【Heavy Duty Triangular Construction】: Engineered with a triangular support system using thickened aluminum alloy tubes. This design provides exceptional stability and a high load bearing capacity, making it strong enough to safely carry heavy cargo or even a passenger 【Adjustable Fit】: Equipped with telescopic support rods that can be adjusted in height and length. This ensures wide compatibility with most 24" to 29" mountain bikes and road bikes, including models with either disc brakes or V-brakes 【Function】: Integrated side guard frames act as a protective barrier, effectively preventing pannier bags, backpacks, or your legs from getting caught in or rubbing against the spinning rear wheel 【Mounting with Anti Slip Gasket】: The seat post clamp is lined with a sturdy, non slip gasket. This not only ensures a firm, grip on your bike but also protects your seat post's paint and finish from scratches and damage Specification: Adjustable Length: 54cm/21.26inch to 57.5cm/22.64inch Adjustable Height: 45cm/17.72inch to 48.5cm/19.09inch Package Includes: 1 Bicycle Rear Rack Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.