Includes 2 pcs 385311462 and 2 pcs 385316140. Compatible with most pedal-flush Dometic VacuFlush and Travel Trailer brand toilets that do not include overflow holes inside the toilet bowl. Fits models 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, 5149. Made of high-quality rubber, helps retain water and prevent odors, high performance, soft, durable, anti-friction, provides good tightness for proper sealing, leak-resistant. Color: black. Material: silica gel. Package contents: 4 x RV toilet bowl leak seal. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.