The belts came very pliable, and appeared to be of recent manufacture. There were a couple of other brands that were not well rated. The proof will be in how well they wear, and whether they stretch easily, which determines how long they will last. My Model B tumbler is almost 40 yrs old, and still going strong. There is no belt tension adjustment, so stretch is more likely to be the more important factor. I've only had the 1st of these belts running for a little over a week. Way too early to tell. If I get a year out of a belt, that would be awesome! Half of that I would still be happy. This is the machine's 3rd belt. The 2nd one lasted almost 39 years, but it was a vacume cleaner belt that is no longer made. No, I'm not expecting that kind of life span by a long shot.
Verified purchase: Yes | Condition: New
The drive belts are properly sized for the Thumler B tumbler as advertised and work better than the o-rings I bought years ago at Grainger after guessing the size.
Verified purchase: Yes | Condition: New
Works great as drive belt and holds lid on tumblers good and tight.
Verified purchase: Yes | Condition: New
The first one brike after 2 days now i have running the second one for 1 week and so far hasn't broke
Verified purchase: Yes | Condition: New
Works well for my tumbler
Verified purchase: Yes | Condition: New
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