Finally, a belt with the inscription "Spare parts for a vacuum cleaner". Fits in my favorite Uh72600 wind tunnel. Worked on the first try! The harness sits freely in an upright position. Test the tension with vacuum in brush roll mode. The tension could have been a bit tighter in my opinion so let's look at durability over time so 4 stars makes 5 if the strap lasts longer. 3 Apr 21 - I finally had to replace the belt.