These snow chains are an immediate lifesaver for your truck when you unexpectedly encounter icy or snowy roads. Made of durable manganese steel, they offer reliable performance. The unique tension cam design makes installation relatively simple and helps securely fasten the chains to the tires. They provide emergency traction to the drive wheels of semi-trailer trucks, vans, and box trucks, helping you get out of trouble. Important note: For safety, always conduct a short test drive after installation and make final adjustments to the tension. Maintain low speeds and drive cautiously on icy or snowy roads. Each set contains two snow chains and is an essential emergency safety accessory for your vehicle.