The belts work as they should. My only complaint is the time frame it took to get these belts as well as the bags I had also ordered. Several days after I placed the order I questioned what the holdup was on shipping and they promptly replied that they were short on the number of belts that I had ordered and so they were waiting on a shipment. I understand how this can happen but I only ordered 6 belts so I feel that since they're commercial vacuum supply house that they should be able to cover a small order like that with in-house stock. That situation had the potential to cost me Revenue if I I needed those vacuums in circulation immediately. So with that being said I'm pleased with the product and I'm pleased with their quick response after I questioned the holdup and I'm glad it all worked out for the best but just am even more cautious now about having backups for the backup parts in case this happens again