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Your cart is empty.Alexie
August 27, 2025
I have an older Grobet 47.782 tumbler (circa ~ 2010) and the drive belt broke. I searched everywhere and by chance found this replacement.. Works perfectly and I'm up and running again. Package arrived quickly and I am a very happy customer.
GregJoeson
August 14, 2025
They fit my Thumler Model B Tumbler perfectly but soon started slipping and did not last long at all. Belts from a different source, although a bit higher in price, are much better (still on the first one of those vs. three of these).
David Venne
July 25, 2025
We have a Thumler's Tumber Model B purchased in 1999 that was used once and then stashed away. Over time the old belt solidified and then fragmented. Because the motor still runs this seemed like a good investment to see if the thing would still polish stone. The replacement belt fit nice and snug, and the tumbler's been tumbling a load of agates now for a week without any issues. Given that it looks and feels like it's made from good quality material I expect the belt will last longer than the poor old motor! Fine product for a lower price than I expected to find!
Redhouse7
July 20, 2025
Do not buy these belts. I have a 3 pound rock tumbler and have broken 2 belts in two weeks. My tumbler is in good working order, the pulleys have been checked for alignment, and I have not overloaded the tumbler. I'm on my third belt, but expect it will fail soon. I suspect these are really o-rings and not actual belts. Belts are designed to be under some tension whereas o-rings are not and fail when put under tension for any length of time. More annoyed than anything else because now I have to order more belts to get though this run of rocks. Grrr!
Quantum Entanglements
June 20, 2025
Excellent quality replacement drive belt for our Rock Tumbler. Good quality and easy to snap on, it's worked very well since installation. Looks & feels (and as above performs) just like the OEM belt. Buy with confidence that it's not just some cheap knockoff replacement part.
DIY Guy
May 14, 2025
Finally pulled out my tumbler again put on a new belt and it lasted one day,I had five of these they all broke , I have one left and , I will not buy these againI used the thumler belt for months and it never broke , these belts are junk
JoAnn Gardner
February 21, 2025
The fit was perfect however, the first band broke only after 5 days if use. So far the second band has held up it is on day 4 so I am hopeful. I still feel it is a good product and would repurchase.
Amber
February 18, 2025
Perfect fit
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