Feature:1. High Compatibility: Compatibility with for Dolphin M200M400M500, for Aquarius XL, for Sigma, for Triton (old model), for Deluxe 4/5, for Apollo Plus, for Endeavor, for Saturn (old model), for Apollo, and for Prowler 820 830.2. Powerful Function: The climbing rings replacements not only enhance safety but also help your pool run efficiently. With outstanding design and structure, they help maintain pool working, ensuring a smooth and enjoyable swimming experience.3. Easy Installation: Soak climbing rings thoroughly in water until they expand and soften enough to install on the rollers. Carefully slide rings in place, ensuring they are securely positioned.4. Premium Material: The replacement climbing rings are made of high grade PVA material, which can withstand long term use and friction, can withstand exposure to pool chemicals and moderate wear and tear, not easy to damage or deformation.5. Increased Efficiency: The climbing rings are designed to provide excellent traction and grip, ensuring that your pool cleaner can easily access every corner of your pool and work efficiently. Bring your pool cleaning work more efficient.Specification:Item Type: Pool Cleaner Climbing RingsMaterial: PVAApplication: Replacement for Dolphin M200M400M500Weight: Approx. 82.00g / 2.89oz.Package List:4 x Climbing Rings