3'' or 4'' flange solvent welds inside of 4'' or over 3'' Schedule 40 DWV pipe. With test cap. Test cap removes by tapping on hammer Icons, breaks out in one piece. Built-in catch teeth prevents the test cap from falling down into the DWV line. Four mounting slots for closet bolts. Four countersunk holes for secure attachment to the floor. Available with all-plastic ring, metal ring and corrosion-resistant Stainless Steel Ring. Available in standard or bulk package quantities.