ALF 82060BU 2-Inch Steel Pressure Gauge with 0-60 PSI and 1/8-Inch Bottom Mount for Pool Pumps The ALF pressure gauge is replacement vacuum gauge for D.E. or cartridge filters It is made of durable material and built to last Used in most common pool equipment Gauge include 2 inch face and 1/8-inch bottom mount steel fitting Also feature work as for 0 to 60 PSI