Personally, I think strap wrenches are total GARBAGE! I bought the Red/Blue set pictured above just for this purpose. I broke the Blue on in the process and cut a grove in the Red one. After all that, I borrowed a heavy duty steel one about 2 feet long from a plumber friend of mine. Still could get the bolt off. It finally came off with a breaker bar. The problem then was the GD bolt BROKE OFF!!!! Luckily it was hollow, so a bolt extractor was able to get the rest of it out. I replaced it with a Grade 8 Allen head bolt and forged steel washer. I used an electric impact with a 30 ft. lbs torque stick to put it back on. To ANYONE doing this, I recommend using an impact gun(carefully) to loosen the bolt before taking the belt off, and again to tighten it once you put the belt back on. Just my $0.02.