Include 2 Pcs 385311462 and 2 Pcs 385316140.Compatible most pedal-flush D0metic///VacuFlush and Travel Trailer brand toilets that do not include overflow holes inside the toilet bowlFit 506/509/510/511/511H/547/548/706/709/748/749/806/808/847/848/1147/1148/2010/2011/5006/5047/5048/5049/EcoVac 146-149/VacuFlush 168/606/647/648/1006/1008/1047/1048/1049/1106/5146/5147/5148/5149Made of high quality rubber,keeps the water in place and the stink out, high performance,soft,durable,anti-Friction,good tightness to seal properly,no worry about leaking.Colour:blackMaterial:Silica gelPackage Contents:4 x RV Toilet Bowl Leak SealOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.