Test-Tite® Flush Cleanout Repair Plug, 3 in Pipe, Domestic
Domestic/Import : DomesticPipe Size : 3 in
The first cleanout repair plug the really worksHolds up to 50 feet of backpressureSeals air tight (does not rely on threads to seal)Back pressure actually increases sealing abilityCompletely flush inside and outStainless steel flat head screwCannot fall into the pipePatent 7,464,727