Fittings swivel 360 degrees for easy connecting and disconnecting

Included 4-in-1 adapter is compatible with 3-inch slip or 3-inch, 3-1/2-inch and 4-inch NPT threaded sewer connection

Easily stores in 4-inch square bumpers when 4-in-1 adapter is removed

Includes a bonus clear extender so you can see when your tank is empty, plus two bayonet and two lug end caps for storage