If you own a mini grinder that uses 3″ wheels, you may have noticed that it’s difficult to find fiber wheels for sale on their own. Typically, they’re only available in a pack with a stone wheel at Harbor Freight. Unfortunately, fiber wheels tend to wear down faster, leaving you with a surplus of unused stones and the need to buy a new set. We offer fiber wheels separately on our website, in packs of 2, 6, and 12.

We also offer replacement stone grinding wheels, sold individually. If your mini grinder’s arbor shaft has a plastic sleeve, you’ll need to remove it before the stone will fit. To do so, set the grinder on its side and gently tap the stone onto the arbor shaft. It’s a tight fit, but it should work. If you’re unable to remove a worn-down stone, you can use a hammer to break it.

In addition to fiber and stone wheels, we’ve also added wool polishing wheels to our selection. They’re very similar to the wool wheel that originally came with the mini grinder but slightly more narrow and firmer.