My model 119's vacuum belt broke every time I vacuumed it and smelled like burnt rubber. Not to mention it takes 15 minutes to vacuum my living room compared to 5 minutes before. In addition, he collected next to nothing even in "High Sog" mode. I was frustrated that the suction wasn't that good and the noise was starting to increase. That's when I searched google and found them at a good price and they came quicker than I expected, took me 5 minutes to install. My vacuum cleaner now works much better with the new belt, it now takes me 3 minutes to vacuum a critter compared to the usual 5 minutes. Definitely worth buying for owners of the 119 model.