The A3960H-18P-1 is a joint tech coupling made of an aluminum alloy. It is designed for use in high speed applications. It is a one-piece design and has a rigid body and metal-on-metal contact for maximum vibration and noise reduction. Its 18-tooth design provides enhanced filtration for smoother operation. It has an outside diameter of 4.90 inches and an inside diameter of 2.41 inches. It is suitable for connection of 8-10mm OD tubes or hoses. The coupling provides good balancing and allows for uninterrupted flow.