7 comb-shaped water jets provide high-pressure cleaning to quickly remove debris, leaves, oil and dirt from spa or hot tub filter cartridges. This helps promote effective aqua circulation and cleaner filtration. Assembly and connection - Insert the comb nipples into the stalk and attach the end connection to a standard US garden hose. - Compatible with common US garden hoses; filters themselves (not included) are standard pool or hot tub filters. Operation and controls - The cartridge can be cleaned when water is flowing through the cleaner. - Use the built-in button to open and close the cleaner and press the button to check the water volume. Key benefits - Delivers strong, pointed cleaning via 7 comb-shaped jets to remove tough buildup quickly. - Simple, user-friendly operation reduces maintenance time and keeps filters working properly. - Compatible with common garden hoses and most standard pool or hot tub filters (not included). What it helps with - Removes wreckage, leaves, oil and dirt from spa or hot tub filter cartridges to maintain proper flow and filtration. - Easy setup and use makes routine pool maintenance faster and more reliable. Use scenarios - After heavy debris or leaf fall, quickly clean a spa or hot tub filter cartridge between full cleanings. - During routine pool maintenance, flush and refresh cartridge filters to restore flow. - Before storage or after periods of heavy use, perform a quick cartridge clean to remove oil and dirt buildup. Notes - Not included: standard pool or hot tub filters. Fits typical US garden hoses.