Features TROPF BLUMAT systems are gravity fed plant watering stakes that give each plant the individual amount of water that it needs to survive. They are adjustable and only water individual plants as they begin to dry out. MADE IN AUSTRIA with the highest grade ceramic materials available. EASILY WATER a 4x8 bed or up to 12 potted plants in pots up to 12" in diameter. PRACTICAL and DEPENDABLE is why we choose Blumats. NO WATER PUMPS are necessary for our system so your plants will get the water they need to survive during power outages and you will never have to worry about a pump failing. Product DescriptionProduct description This kit includes everything you'll need to irrigate twelve potted plants from a gravity feed -- just source your own reservoir! This kit includes: -12x Tropf Blumat Sensors -23' 8mm Black Tubing -1x 8mm Tee -1x 8mm Elbow -1x 8mm Union -1x 8mm Hose End-Piece -1x Safety Warning Always ensure the water source is clean and safe for plants. Be careful when handling the kit to avoid damage or injury. This product is gravity-fed and does not require electricity.