Made Of High Strength Silicone Rubber,Flexible Hose, Can Be Bended.It helps the engine attract more air and colder, which results in a better throttle response and greater explosive power output.Performance design specifications for high light air flow racing,Flexible cold air intake duct, more comfortable when used.Widely used, it fits most vehicles with 63mm (2.5 inches) air inlet hose.Installation: direct replacementColour: blackMaterial: ABS plasticInner Diameter: 63mm/ 2.5inchOuter Diameter: 71mm/2.79inchPackage Contents:2 x Air Intake System HoseOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.