this was the perfect size to fix my bissell proheat 2x years ago. I never thought roller skates were motorized. I thought they only work because you roll on the floor. A reconnaissance operation was required. But with the installation of this drive belt (smaller) and roller belt (larger), the shim works great. Here's another tip. If you need new belts, it's time to clean the red nozzles as well. You have to disconnect the hoses (under the main tanks) and then dip them in a very hot water bottle (3/4 full) and shake the bottle. You'll likely see limescale coming out of them. I went through them and was finally able to delete them.
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