v The product is made of high strength stainless steel, durable and non deformated. The stretch cord is fast and easy adjusting, it ensures you have exactly right length and tension. It is versatile and can be used for a long time. v Can be used as a leash attachment to prevent your dog from pulling the bar from the ground. v The spring is made of high-strength chrome-plated steel, which is easy to clean and prevents oxidation, which can maximize product life. v One end of the belt is fixed on the shock absorber spring through a ring, and the other end of the shock absorber spring is fixed on the pawl through a spring hook. Description: Material: Alloy Product size: about 10*3cm /3.9 * 1.2 inch Weight: about 90g/pcs Package Included: 4 * Tension Springs Note: Due to the different monitor and light effect,the actual color maybe a slight different from the picture color. Please allow 1-2cm differs due to manual measurement.