Compatibility: The roof rack side rails are compatible with 2007-2020 Mercedes Benz Sprinter 170 Wheel Base. Please confirm that your vehicle model is compatible with our side rails before purchasing Material: The side rails are made of aluminum, which are lightweight, durable and not easily damaged Function: This luggage rack side rails are widely used and can be used to place luggage racks, ladders, etc. The streamlined design can also help reduce wind resistance and noise Package contents: You will receive a set of side rails, no crossbars. We offer three different sizes of side guardrails to meet your different needs Easy Installation: No additional instructions required. The side rails are easy to install, direct install with screws