Check the listing for details. Briggs B360521 Flapper. Condition: New. Listed at 12.62 USD. The Genuine Briggs B360521 Flapper. This flapper comes complete with the rubber strap. The flapper itself is also rubber. Therefore it will not crack or break. This flapper is a genuine Briggs part. This flapper replaces the original flapper in the 6080 and 6085. Also this flapper is blue. The strap for the flapper is also rubber. Therefore it can not rust. This flapper is a two inch flapper. Therefore it fits a two inch flush valve. However the flapper, being rubber, creates a good seal. Which stops leaks. The strap connected to the flapper also connects to the lever. Which when you push down on the lever it lifts the flapper causing a flush. Once again, The Genuine Briggs B360521 Flapper. In conclusion the flapper comes complete. Therefore it can be installed and used properly. When the flapper fills with water it falls back down. Therefore it stops more water from draining into the bowl. Also, over time the rubber will swell. Therefore it may cause the flapper to leak. This is due to the rubber being in water for so long. * Genuine Briggs Replacement Part * Made of rubber * Comes with Strap * easy to install * Made for 6080 and 6085 toilets