Wide Compatibility: This replacement kit includes climbing rings and a pool cleaner timing track, compatible with compatible various Dolphin Maytronics Robotic Pool Cleaners, including M200, M400, M500, Nautilus, Nautilus CC Plus, DX3, DX4, DX6, and Aquarius XL. Please check your device model be compatiblee ordering. Complete Replacement Kit: The package contains 4 climbing rings (6101611-R4) and 2 timing tracks (9985006-R2), also fitting compatible Sigma, compatible Triton (old), compatible Deluxe 4/5, compatible Apollo Plus, compatible Wave 65, compatible Endeavor, compatible Edge, compatible HD, compatible Saturn (old), compatible Atlantis, compatible Apollo, 3001, 2X2, compatible Wave 2X2, compatible Prowler 820/830, and more. Premium Quality Materials: Made from High-quality materials, these parts ensure your compatible Dolphin robotic cleaner operates efficiently and lasts longer. They are designed to keep your pool cleaner running smoothly and safely. Compatibility Assurance: Non-Part Number parts compatible Maytronics Dolphin Nautilus CC Plus. Any brand names or model designations used are strictly compatible demonstrating compatibility. Colour:As Shown Material:Plastic Package Contents: 1 set * swimming pool cleaner replace parts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.