This stopper with screw in sanitary gray is made of PVC and has a diameter of 110mm. This end stop is suitable for placing between the PVC pipe during installation where blockages may arise. In the event of a possible blockage, you can simply loosen the screw cap of the end stop to access the sewer for inspection or to insert a hose to flush the sewer system. A PVC end piece with screw cap can be installed in combination with a T-piece in the crawl space or at the end of the pipe just below ground level.