Wide compatibility with multiple well known robotic vacuum models including S65 / / + series and other primary versions like S50 / / standard / S65 standard / E10 / E20 / T7S / T8 collection, ensuring proper matching for your cleaning device Package includes 2 replacement, providing complete spare parts solution to extend your robotic vacuum ' s working period and maintain optimal functionality Simple setup with push in design allows quick replacement just place and press the new wheel into position without requiring any tools Meticulously designed nylon construction with robust bearings delivers quiet functioning and consistent motion on all floor types for effective cleaning Successfully resolves common issues such as wheel wear, jamming, unusual noises or movement problems, restoring your robot ' s smooth navigation and mobility