Made of high strength chrome plated steel, wire diameter 3mm. Durability and no deformation, easy to use. Stretch line quickly and easily adjusted to ensure you have the right length and pull Perfect cost performance. Versatile, can be used as a pet traction chain or tent wind rope buckle For tent protection. When the wind blows, the spring hook can buffer the wind and prevent the tent from being damaged by the wind Spring for dog belt shock absorber. Between the belt and the fixed connection, it can relieve the sudden stop of the pet. Attach your own heavy clip to your existing dog collar and use another quality ring at the end to hook your belt Length: 10cm; Diameter: 3cm; Wire diameter: 3mm