1,Plastic Material: Made of sturdy plastic material, the pool vacuum plate is durable, wearproof, and designed for long term use. It will stand up to time and frequent use. 2,Compatibility: Pool vacuum plate is compatible for Pentair 513330 and for Hayward SP1091WM, ensuring a perfect fit for your pool cleaning needs. 3,Function: Direct use of water pipes will easily block the pool cleaner, the use of vacuum plate can greatly reduce the occurrence of this situation, and can also extend the service life of the cleaner. 4,Easy Installation: The pool accessory is easy to install and can directly replace old or damaged ones, meeting all your needs with convenience. 5,Versatile Use: This pool vacuum plate is a practical accessory, ensuring worry free use. The vacuum plate can be used for swimming pools, SPA, and more. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.