[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, Plus, CC Plus, 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 result in slow movement, reduced traction on the pool floor, and difficulty climbing walls. These replacement parts help maintain 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 Note: Light reflection and different display settings may cause slight variations in the color shown in the image compared to the actual item. Measurement may vary by +/- 1-3 cm.