Climbing Ring replacement kit for Dolphin Maytronics robotic pool cleaners. Compatible with models: M200, M400, M500, Nautilus, Nautilus CC Plus, DX3, DX4, DX6, Aquarius XL, Premier, Oasis Z5i, Sigma, Triton (old), Deluxe 4/5, Saturn (old), Atlantis, Apollo, Apollo Plus, Wave 65, Endeavor, Edge, HD, 3001, 2X2, Wave 2X2, Prowler 820/83. Replacement for part number 6101611-R4. 16-pack value set. Made of heavy-duty rubber material for durability and efficient performance. Designed to help maintain proper function and safety of your pool cleaning robot. Simple installation: Soak the climbing rings in water until expanded and softened, then slide onto rollers. Color: White. Material: PVA. Package includes: 16 x Pool Cleaner Climbing Rings. Other products not included. Note: Light reflection and different displays may cause slight color variations. Measurement error allowance: +/- 1-3 cm.