Dolphin Genuine Maytronics Pool Cleaner Foam Climbing Rings 6101611 Genuine Dolphin OEM 6101611 Foam Climbing Rings for Dolphin Cleaners Use everytime when replacing Dolphin Pool cleaner Brushes- New rings help Dolphins Climb Pool Walls- For Nautilus Triton Plus and Nautilus Plus cleaners --Also for use with the following Dolphin cleaners Dolphin Nautilus Plus Dolphin Nautilus Dolphin Triton Plus Dolphin M200 Dolphin M400 Dolphin C3 Cb Dolphin C4 Cb Dolphin Discovery Dolphin Saturn Dolphin Edge Dolphin Supreme M3 Dolphin Supreme M4 Pentair Prowler 820 Pentair Prowler 830 Dolphin Dx3 Dolphin Dx4 Dolphin Apollo Dolphin Premier