This is a Maytronics Dolphin PVC Diagnostic Brush in Gray.
This pool cleaner brush goes on the following cleaners: Dolphin Pro, Diagnostic Commander, Sprite, Explorer, Dx3, Dx4, Supreme M4, Supreme M3, Wave 50, Apollo, Edge 2×2 Gyro, Discovery, Dx5, Light Premier, Quest, Saturn, Primal X3, C3 Cb, 2×2 C6 Plus, M200, Nautilus CC Plus, Advantage Plus.
This brush also fits Pentair Prowler 820/830.
