Maytronics 9980731 - Dolphin M4 Cartridge Locking Hook

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Maytronics 9980731 Dolphin M4 Cartridge Locking Hook is a replacement locking hook for cartridge-style filter assemblies on compatible Dolphin cleaners. Fits M4, M5, M400, M500, Li berty, Triton Plus, and Nautilus Plus cleaners. Key Features: Cartridge locking hook | M4 filter hardware | Filter basket retainer | Dolphin replacement part Show more