1. Compatible with: RCX70101PAK2/RCX70101 is exactly compatible with Hayward Robotic Pool Cleaners: for TigerShark, TigerShark QC, TigerShark Plus, TigerShark2, TigerShark2 Plus Series, SharkVac XL, SharkVac, Aqua Vac 500 Series. 2. Premium Material: ABS plastic frame more sturdy and durable, providing maximum hydraulic efficiency and overall structural stability. The premium ultrafine filters can last 2 3 years. Please rinse the filter every 4 6 weeks for optimal performance. 3. Powerful Filtration: The robotic pool cleaner filter uses a diamondshaped grid woven with reinforced PET fiber material at the same time, giving the robotic pool filter an ultrafine and more pleated shape for maximum filtration efficiency while removing dirt and debris from your pool, keeping your pool cleaner in its condition. 4. Function: Trap Everything Pleated ultra fine pool cleaner filter remove small particles more efficiently than nonpleated one, keep your pool floor crystal clear.