1). a valve tap on the waste tank to connect to the pipe. 2). with an upper board on the waste tank to put dispenser and paper box. 3). can be used by two people at the same time. 4). with wheels on the waste tank for easy carrying. Size: 870x467x1200mm. Water Tank: 130L. Waste Tank: 130L. Weight: 31kg. Standard Accessories: Water Tank, Waste Tank. Optional Accessories: Dispenser, papar box. Warranty: 6 years. http://www.topplatoilet.com/no-touch-portable-hand-wash-station-with-wheels-for-2-users.html