The Hayward W560 Standard Size Leaf Canister works with most automatic swimming pool cleaners including Navigator, Ultra and Kreepy Krauly and simply connects between 2 hose lengths when using standard hose sections. The leaf canister is designed to collect leaves and other large debris before it reaches your pool filter resulting in much less time spent cleaning the skimmer and pump baskets. Leaf canisters also help your pump and motor last longer by preventing line clogs.