This drive belt and roller set is standard for all tracked residential models and commercial models with the exception of the commercial Duramax, Gemini, and Magnum. Also fits irobot, blue pearl, Bravo, Viva, Supreme, Xtreme, Aquafirst and others. Your unit may require more than one kit. To check, just twist the tracks on both sides to look for the belts underneath.
The rollers are recommended every other belt change unless abrasives in the pool have caused wear to the side plate pins that they slip over. They should be replaced when changing a side plate.