Camco RV Sewer Cap with Hose Connection is used to cap your sewer connection and prevent leaks. Cap with hose connection allows you to drain grey water tank easily. Bayonet style tabs lock securely to the RV drain valve. (2 Pack) Caps the sewer connection to prevent leaks Caps with hose connection that allows to drain grey water tank easily Bayonet style tabs lock securely to RV drain valve Made of highly durable plastic Easy to install and easy to use