The part number on my old strap was replaced and then the item number changed again. When the belt arrived I was sure it was the wrong belt as it was significantly smaller. But I was wrong, it was the right belt. The old belt was stretched (and of course broken) and the new belt had to be stretched to accommodate the vacuum. But it's a solid belt. Interesting note: I could only order the belt as an accessory due to the shipping costs, so I combined it with a few other items. In the end, Revain shipped the belt himself, removing all restrictions. I think it's okay for them to decide and I can't.