[9985006-R2 TRACK REPLACEMENT PARTS] Compatible with numerous Dolphin robotic pool cleaner models including Dolphin DX, Dolphin Explorer, Dolphin Wave, and Dolphin Advantage. [6101611-R4 ROCK CLIMBING RING REPLACEMENT PARTS] Compatible with robotic pool cleaners such as DX3, DX4, DX6, M200, M400, M500, CC Plus, Z5i, XL, Premier, Primal X3, Triton (old), Deluxe 4/5 (old), Wave 65, Endeavor, Edge, HD, 3001, 2X2, Wave 2X2, and Prowler 820/83. [IMPROVE YOUR ROBOTIC POOL CLEANER'S PERFORMANCE] Worn out tracks can lead to reduced performance in your automatic pool cleaner. This 2-pack pool cleaner timing track is designed to replace worn tracks that cause slow movement, poor traction on the pool floor, and difficulty climbing walls. Helps maintain optimal cleaner function and pool maintenance. [HIGH-QUALITY CONSTRUCTION] The 9985006-R2 pool tracks and 6101611-R4 rock climbing ring replacement parts are made from durable materials for extended use. 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 display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.