Description: 【Wide Compatibility】: This replacement climbing ring is designed to replace the part number 6101611- and is widely compatible for various models, including M200, M400, M500, Nautilus, CC Plus, series, Sigma, Triton, and Wave pool cleaning robots 【Enhanced Climbing Performance】: Made from quality PVA material, these climbing rings significantly improve the adhesion to pool walls. This upgrade enhances the robot's climbing ability and overall cleaning efficiency 【Easy Installation】: The replacement process is straightforward and requires no special tools. This makes maintenance easily for both homeowners and pool service professionals 【Complete Set for Full Replacement】: Each set includes four climbing rings to meet the full replacement needs of cleaning robot. This ensures the stable operate of your pool cleaner after maintenance 【Quality Material for Longevity】: Constructed from quality materials that withstand regular use in Poolming pools, these climbing rings are designed to provide long term performance and reliability in maintaining a clean pool environment Specification: Material: PVA Size Chart: Diameter: 9cm/3.54inch Package Includes: 4 Climbing Rings Replacement Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.