Pipe Plug, Mechanical, Size 4 InMfr # 270296 Material ABS Plastic, Rubber For Use In Sealing The Inside Of The Pipe Max. Back Pressure 40 ft of Head Type Mechanical Item Pipe Plug Series Inside Of Pipe Gripper Plug Seal Location Inside Pipe Bypass Thread Gender Not Applicable Included Water Fill Port Hose Not Included Maximum Back Pressure (Air) 17 psi Handle Material Zinc Head Type Wing Nut Application Stack Testing Bypass Connection Type Not Applicable Plug Seal Material Natural