Product Description 10PCS Heavy Duty Tent Spring Buckles, Stainless Steel Tent Rope Fixed Buckle Tensioner Outdoor Camping Multifunctional Usages It consists of a spring and two V-shaped hooks, the self-adaptive spring can adjust the elasticity according to the wind force, so that the tent rope is always in a tight state. Made from high-strength chrome-plated steel, which is easy to clean and prevents oxidation. Stable and durable, and is not easy to collapse under high- strength tension Spring Hook Construction The self-adaptive spring can adjust the elasticity according to the wind force, so that the tent rope is always in a tight state. Strong Load-bearing Capacity Can withstand a maximum pulling force of 50kg / 110lb. When the fierce wind is coming, the spring hook can dampen the wind and prevent the tents from being damaged by the wind.