This Vibrant 4 Ply Reinforced Silicone Straight Hose Coupling is a great choice for connecting two hoses together. It is 2.5in I.D. and 3in long, and is made from high-quality silicone for maximum durability. This coupling is reinforced with four layers of polyester fabric and is designed to handle high temperatures and high pressures. It is black in color and is ideal for use in automotive, marine, and industrial applications.