The moisture meter can quickly measure the moisture content of the grain. 1. Compatibility: filter is specially manufactured for TigerShark, for SharkVac and for AquaVac robots for cleaning pools and bathtubs 2. Thick filter material: The pool purifier filter is made of plastic frame and thick filter material, which can withstand harsh and frequent use, as well as a large amount of dirt and debris 3. 3-layer pool and spa filter: We have designed a 3-layer vacuum filter for the pool and spa that can absorb as much dirt and grime from the pool as possible. 4. Washable: These pool and jacuzzi cleaning filters can be cleaned after each use. 5. Swimming pool accessories: Specially manufactured for the Hayward series of vacuum robot models for swimming pools, so you can reduce the time, energy and cost of necessary maintenance of the outdoor pool. It's a great addition to the pool. Specification: Item Type: Robotic Pool Cleaning Filters Product Material: PP, PET, Activated Carbon Weight: ok. 548 g / 19,33 oz Product Size: ok. 292x169x12mm / 11,5x6,7x0,5 inch List of packages: 4 x Pool Cleaning Filters