[9985006-R2 TRACK REPLACEMENT PARTS]Compatible With Numerous Dolphin Robotic Pool Cleaner Models, Compatible With Dolphin DX Dolphin Explorer Dolphin Dolphin Wave Dolphin Dolphin Advantage, and more. [6101611-R4 ROCK CLIMBING RING REPLACEMENT PARTS]compatible with robotic pool cleaners like 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 cause several performance setbacks for your automatic pool cleaner. 2-Pack Pool Cleaner Timing Track designed for tackling worn tracks that cause your automatic pool cleaner to move slowly, lack traction on the pool floor, and fail to climb walls. They are perfect for maintaining your pool safe and functioning properly. [HIGH - QUALITY]9985006-R2 pool tracks and 6101611-R4 rock Climbing ring replacement parts are made of high-quality materials to that the duration is longer. Colour:White Material:Plastic Package Contents: 2x belts 4x pulleys 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.