[9985006-R2 TRACK REPLACEMENT PARTS] Compatible with numerous Dolphin robotic pool cleaner models, including Dolphin DX, Dolphin Explorer, Dolphin Wave, Dolphin Advantage, and more. [6101611-R4 ROCK CLIMBING RING REPLACEMENT PARTS] Compatible with robotic pool cleaners such as DX3, DX4, DX6, M200, M400, M500, CC Plus, Oasis Z5i, XL, Premier, Primal X3, Triton (old), Deluxe 4/5 (old), Wave 65, Endeavor, Edge, HD, 3001, 2X2, Wave 2X2, Prowler 820/83. [IMPROVE YOUR ROBOTIC POOL CLEANER'S PERFORMANCE] Worn out tracks can cause performance issues for your automatic pool cleaner. This 2-Pack Pool Cleaner Timing Track is designed to replace worn tracks that cause slow movement, lack of traction on the pool floor, and inability to climb walls. Ideal for maintaining optimal cleaner performance. [HIGH-QUALITY] The 9985006-R2 pool tracks and 6101611-R4 rock climbing ring replacement parts are made of high-quality materials for extended durability. Color: White Material: Plastic Package Contents: 2x belts 4x pulleys Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3 cm.