5 Gallon 4 Port HiVis Manifold. Eliminate clutter by running just one air hose to your worksite and connect up to eight pneumatic tools at once. Equipped with a gauge to monitor working pressure and a 200 psi pressure relief valve to prevent excess pressure build-up. Top and bottom brackets allow for easy stacking or mounting to skids or other surfaces. Connect or stack multiple manifolds to handle the busiest worksites.