Nitrous Express15501FittingsThis billet aluminum manifold swivels on one end which allows you to attach the manifold without turning the entire manifold body. This is especially useful when attaching the manifold to the NX Lightning 45 bottle valves. The manifold has two 1/8npt ports allowing you to connect a nitrous gauge, fuel pressure gauge, or any 1/8npt accessory in-line with a 4AN line.Nitrous Express swivel gauge adapters provide secure, easy attachment to the manifold, allowing connection without turning the entire manifold body. Featuring aluminum construction with a durable anodized finish, you will fully appreciate the swivel design when attaching your manifold to NX Lightning 45 bottle valves. Nitrous Express swivel gauge adapters are available in different sizes and have two 1/8 in. NPT ports that allow you to connect a nitrous gauge, fuel pressure gauge, or any 1/8 in. NPT accessory inline.