Nitrous Express N2O Flo-Thru Pressure Gauge (0-1500 PSI) 4AN

Includes a high accuracy nitrous pressure gauge and a billet aluminum manifold that has two 1/8 npt ports allowing you to connect the nitrous gauge as well as another 1/8npt accessory in-line with a D-4 or D-6 line.
Warranty
Certificate of Origin