Kannastor GR8TR V2 Complete Grinder System

19 reviews
$ 94.99


$ 94.99 $ 89.99


Color Matte Black

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Swiss Army Grinder

No other grinder is as complex and versatile as the Kannastor GR8TR 2.0. Kannastor has once again updated and improved on its already fantastic design. They realized that customers wanted the freedom to customize their grinder to better suit their taste and that people need different grades for their grind. You can grind your herb fine for vaporizers or coarse for joints.

They targeted three improvement areas: effortless grinding action, increased storage capacity, and customization. The result is the impressive and ultra-streamlined GR8TR 2.0 grinder. This model of the GR8TR has the most features and storage aspects to it. You can even keep some fresh bud in the top under the lid plate.

The GR8TR is modular by design. When it comes to assembling and configuring your GR8TR, the choice is yours. Not interested in sifting? Remove the sifting chamber to create a perfect 3-piece GR8TR. Otherwise, convert your grinder into a storage sifter and get the most out of your herbs. You can also take out the plates to turn it into a slim pocketable Storage Puck.


  • Complete kit has an expanded chamber w/removable keef screen
  • Modular design allows different configurations
  • Height: 3.65 in
  • Micro-Teeth design that allows for smoother grinding
  • Friction/Residue rings provide easy turning
  • Interchangeable plates let you choose the fineness of your grind
  • Easy Change screen for quick swapping and replacing
  • Solid body or clear acrylic window for your viewing pleasure
Customer Reviews
4.8 Based on 19 Reviews
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Filter Reviews:
Brian B.
United States


It’s like the Swiss Army knife of grinders!

United States United States

Nice grinder

Overall the grinder is great and adds a ton of functionality to your basic grinder. But, the threading on one of the grind plates is a little off and has a tendency to loosen itself if I don't hold it in place while using it. Other than that, I'm loving it.

Kenneth S.
United States United States

Very nice

It's a great grinder

Fabrizio N.
United States United States

Grinds too fine even without fine plate

Before I give my overall experience I want to let it be known that I have experienced owning a Santa Cruz shredder and have had the opportunity to use a couple of Cali crushers. The concept, great. Functionality, meh. The threads are so thin that the grinder has to be carefully and perfectly be placed on top in order to close it up which can sometimes cause grinding of the two pieces together. The grinding discs included are a coarse and fine category, in my opinion both grind stuff very ‘dust’ like consistency rather than a puffy one AND the herb always gets stuck in the holes which lead to the storage chamber which means I usually have to get something to pick them out with or simply live with the fact that some of my herb will remain in the grinder until next use. Would be great for someone who strictly uses this for a vaporizer.