This Vibrant 4 Ply Reinforced Silicone 90 degree Transition Elbow is a high quality, durable product designed for use in automotive and industrial applications. It measures 2.5 inches in inner diameter (I.D.) and 3 inches in outer diameter (O.D.), and is black in color. This elbow is constructed with 4 plies of silicone reinforced with a polyester braid for superior strength and flexibility. It is designed to resist extreme temperatures, vibration, and pressure, making it ideal for a variety of applications.