3 to 4 In. Multi-Size Test-Ball Plug, Cherne, Mfr#: 276348

Plug, Air Connection Gender Male, Air Connection Size Not Applicable, Air Connection Type Tank Valve, Body Surface Style Textured, Bypass Connection Size Not Applicable, Bypass Connection Type Not Applicable, Bypass Thread Gender Not Applicable, Deflated Diameter 2.64 in, Deflated Length 5.18 in, For Maximum Pipe Inside Diameter 4.25 in, For Maximum Pipe Size 4 in, For Minimum Pipe Inside Diameter 2.8 in, For Minimum Pipe Size 3 in, Head Tether Connection Ring and Chain