Features: Balance design; Automatic needle design; Central freezing point design. Chains are resistant to pressure, low temperature and wear. The new adjustment lock is robust and stable. Strong engineering belts are resistant to pressure, low temperature and wear. This chain closely matches the perforated tire, which is a very safe driving. You can choose the number of tire chains Scope of application: Ices road, snow road and mud road. Note: 1.According to different situations, digital installation is different, such as emergency upgrade.You can install two chains, depending on the situation. 2.Don't put the chain into the air-filled hole. 3.Two devices, mounted on the transmission wheel, four devices can be used free of charge. 4.Make sure the model is inspected if the tire is changed the tire is changed. 5.Because of the difference between different monitors, the image may not reflect the actual color of the article. Specifications: Type: Vehicle Anti-skid Chain Size: Anti-skid chain about 34x15cm,nylon rope about 50cm Product Material: Steel Package List: 1/2/4x Anti-skid chains