Check the listing for details. CHERNE 271683 Locking Plug,3"H,4"Pipe 3NVT9. Condition: New. Listed at 31.60 USD. Locking Plug, Bypass Connection Size Not Applicable, Bypass Connection Type Not Applicable, Bypass Thread Gender Not Applicable, For Maximum Pipe Inside Diameter 4.38 in, For Minimum Pipe Inside Diameter 3.8 in, For Pipe Size 4 in, Handle Material Stainless Steel, Included Water Fill Port/Hose Not Included, Maximum Back Pressure (Air) 6.5 psi, Maximum Back Pressure (Water) 15 ft of head, Overall Height 3 in, Padlock Shackle Diameter 3 1/2 in, Plate Material Plastic Designed to seal monitor wells, this CHERNE INDUSTRIES monitor well locking plug is sized to seal Schedule 40 piping. Features chemical- and petroleum-resistant Estaloc(TM) plastic top and bottom plates and a petroleum-resistant nitrile O-ring. Model comes with a stainless steel carriage bolt and a yellow chromate-coated locking.