Description [Parts for Dolphin Pool Cleaners]: Our climbing ring replacement kit is for Dolphin Maytronics robots to climb and clean pools. Compatible models: M200, M400, M500, Nautilus, Nautilus CC Plus, DX3, DX4, DX6, Aquarius XL, Premier, Oasis Z5i. [Climbing rings] are compatible with the Dolphin Automatic Pool Cleaner 6101611-R4, as well as Dolphin, Maytronics, Robotic, Nautilus CC Plus models, and Sigma, Triton (older model), Deluxe 4/5, Saturn (older model), Atlantis, Apollo, Apollo Plus, Wave 65, Endeavor, Edge, HD, 3001, 2X2, Wave 2X2, Prowler 820/83 models. [Dolphin Deluxe 4-Piece Pack] Suitable for Dolphin Nautilus CC Plus Robot Pool Cleaner 6101611 / Value 4-Piece Climbing Ring Replacement Kit. [Premium Materials] Foam kit for Dolphin Pool Cleaner Impeller Walls. Our Dolphin climbing rings are made of high-strength materials to ensure efficient operation of the Dolphin robot and extend its lifespan. They are ideal for maintaining pool safety and proper functioning. Note: This product is a Dolphin Nautilus CC Plus accessory, not a part number item. Any brand name or model used on this product is for compatibility purposes only. Color: White Material: Plastic Size: 4.8 x 2.6 x 9.2 cm Package Contents: 4 x Pool Wheels Only the above package contents are included; other products are not included. Note: Light reflection and different monitors may cause the color of the items in the picture to be slightly different from the actual product. The measurement error is +/- 1-3 cm.