Positive jet design: High-quality positive jet design can generate high pressure and save water. It can enter each filter pleat and remove debris and dirt from the filter in seconds. Simple Operation: Start/Stop button is easy to operate, press the Start button when use. Press the stop button when cleaning is finished. Water volume control: The regulator dial can control the water flow needed. Install the hose fittings to increase the length of the pool filter nozzle cleaner. Save time and effort: Save yourself tedious cleaning work and complement the excellent work of a pool filter nozzle cleaner. swimming pool filter in seconds. Compatible: Compatible with most swimming pool filters on the market (filters not included). Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.