The Oase Y-Piece is a water distributor with one inlet and two adjustable outlets. The inlet has a multi-stage hose connector for 3/4\" - 2\" flexi hose. The outlets come with two multi-stage hose connections from 1\"-1.5\". Both outlets are individually adjustable through the built in flow control taps. Y-Connection piece with control valves to connect three varying diameters of hose. Each of the three hosetails will take 20mm (¾\"), 25mm (1\"), 32mm (1¼\") or 40mm (1½\") hose, and you would then cut off the unused smaller connections to achieve maximium flow