Manifolds are also available with larger, easier to read 3-1/8 inch color-coded gauges in rugged steel cases with polycarbonate crystals. These gauges feature 1% accuracy (class 1) for an exact reading in critical charge systems. Forged brass body for durability. Full porting maximizes capacity and flow. Some models include color-coded, 60 inch Plus II hoses with standard 1/4 inch flare fittings. Hose assemblies UL recognized for 4000 psi (275 bar) burst and 800 psi (55 bar) working pressure.