Pressure Gauge, Welding, Dial Size 2 In (51mm), Range 0-100 psi / 7 bar, Connection Size 1/4 In (6mm) MNPT, Connection Location Bottom, Smallest Graduation 2 psi, Graduations 20 psi, Case Material Steel, Case Color Black, Socket Material Brass, Tube Material Phosphor Bronze, Lens Material Polycarbonate, For Use With Pressure Regulators, Manufacturers Warranty Length 1 Year