[Tested and Working] Roomba Tire Module (for 642 models) - This item has been tested and is in working condition. *This is a repurposed part from a unit used for about a year.* Please reuse the screws from your own Roomba for installation. This has been tested on a 980 model. Would you like to use it as a replacement? The tire rubber still has plenty of tread, and it's widely compatible with Roomba 500-900 series models, but please note that it is not compatible with e and i series models or later. Price negotiations are not accepted. The price will be lowered periodically, so please purchase at your preferred price point. This item is also listed on other flea market sites, so it may be removed suddenly. In the event of simultaneous purchases (if purchased before cancellation), the first buyer will be prioritized. Thank you for your understanding.