Special Features:Flexible Good Quality Rubber Type Of Rubber Cone.Seal Water From Coming Out From L Bend Paip Toilet Flush.Inner Diamter Of Big Cone Is 72mmReplacement Of WC Rubber Cone If Leaking Water HappenedOld Rubber Con Will Be hardened Over Time Period, Causing Leaking Happened.All WC Rubber Cone Diameter Is Slightly Smaller Than Toilet Bowl Output And L Bend Flush Pipe.When WC Black Rubber Cone Is Inserted , It Will Expand And Fit Tightly To Create A Seal On It.Thus ,Naturally All WC Rubber Cone Are Mishappened Slightly But Once Fitted Will Be Perfect.