This Vibrant 4 Ply Reinforced Silicone Straight Hose Coupling is 5 inches in diameter and 3 inches long. It is made from high-quality silicone and is reinforced with four layers of polyester fabric for added strength and durability. The black color ensures a sleek, modern look. This hose coupling is designed to connect two hoses together securely and is ideal for automotive, marine, and industrial applications.