Flush accumulated sediment from your water heater tank to prevent corrosion, restore heating efficiency and extend water heater life. Connects to any garden hose to send a concentrated stream of fresh water into the tank when inserted through the drain valve opening. Angled tio flushes sediment back out the drain opening. Handy built-in, thumb-operated water on/off valve. High-impact plastic won't rust or corrode, 13" length.