Test Ball Plug, Pneumatic, Nominal Size 2 In, Min Dia 1.88 In, Max Dia 2.25 In, Max Back Air Pressure 22 PSI, Max Back Pressure 50 Ft of Head, Required Inflation Pressure 40 PSI, Deflated Size 6L x 1.75D In, Material of Construction Rubber, For Use In Blocking Sewer Flow Or Conducting Sewer Air Tests