Test Ball Plug, Air Connection Gender Male, Air Connection Size 1 1/2 in, Air Connection Type Tire Valve, Body Surface Style Textured, Bypass Connection Size 1/4 in, Bypass Connection Type NPT, Bypass Thread Gender Male, Deflated Diameter 1.4 in, Deflated Length 3.8 in, For Maximum Pipe Inside Diameter 1.88 in, For Maximum Pipe Size 1 1/2 in, For Minimum Pipe Inside Diameter 1.49 in, Head Tether Connection Ring and Chain, Inflated Length Not Applicable, Maximum Back Pressure (Air) 22 psi