Designed for vehicles with existing side rails no more than 50in apart, these universal fit Apex Aluminum Roof Crossbars clamp onto your rails and tighten in place using large easy-turn knobs. They feature a 150-pound weight capacity, perfect for carrying extra luggage and other equipment on your next adventure. The clamps also have a ribbed rubber insert for increased traction and stability during travel. Lightweight and rust-proof, these crossbars are a perfect accessory for your next road trip and can be used with cargo boxes, cargo bags and roof top carriers.