CHERNE Mechanical Expansion Plug Replacemnt Pad

Mechanical Expansion Plug Replacement Pad, Bypass Connection Size 4 in, Bypass Connection Type Not Applicable, Bypass Thread Gender Not Applicable, For Maximum Pipe Inside Diameter 4 in, For Minimum Pipe Inside Diameter 4 in, For Pipe Size 4 in, Handle Material Not Applicable, Included Water Fill Port/Hose Water Fill Port Included, Maximum Back Pressure (Air) 65 psi, Maximum Back Pressure (Water) 150 ft of head, Overall Height 1 in, Padlock Shackle Diameter Not Applicable