Test Plug Air Connection Gender Female Air Connection Size 5/8 in Air Connection Type NPT Body Surface Style Smooth Deflated Diameter 3 in Deflated Length 26.5 in For Maximum Pipe Inside Diameter 6 in For Maximum Pipe Size 6 in For Minimum Pipe Inside Diameter 0.38 in For Minimum Pipe Size 4 in Head Tether Connection Handle and Strap Inflated Length 26 in Maximum Back Pressure (Air) 40 psi Maximum Back Pressure (Water) 30 ft of head Number of Inflation Chambers 1