Kannastör GR8TR V2 Jar Grinder

Regular price $89.00

The world’s first and only fully-customizable grinder, the GR8TR lets you mix and match different parts to create the ultimate personalized experience. Improving on the traditional “bed of nails” grinder design, the GR8TR is built with premium metal materials throughout that employ a smooth and effortless grinding action to make grinding easier than ever, while a bottom kief catcher ensures none of your materials ever go to waste.  

The GR8TR V2 "Jar" Grinder is the latest iteration of this highly reviewed grinder and is one of three advanced grinders in the GR8TR collection. It comes with a clear, see-thru storage compartment, both Vape and Standard Easy Change Grinder plates, a 60 Mesh Stainless steel Easy Change Screen™, top-lid bonus storage area, and all the modularity that one could ever hope for.

Convert your GR8TR® into a Storage Sifter and get the most out of your Herbs. Not interested in sifting? Remove the sifting chamber to create a perfect 3-piece GR8TR®. Grind and Go. Brake the GR8TR® into a slim pocketable Storage Puck. No other grinder offers this many versatile configurations.



  • Limited Lifetime Warranty
  • Premium Food Grade Quality
  • Engineered for a Perfect Grind
  • GR8TR® Storage Lid
  • Spare Grinder Plate Storage
  • Bonus Storage
  • Anti Friction & Residue Rings
  • Micro Teeth
  • Deep Dish Grinding Chamber
  • Easy Change GR8TR® Plates
  • Grounds Storage & Screen Chamber
  • Clear, See-Thru Design
  • Easy Change Screen™
  • Polished Puck Base
  • Worldwide Patents



Micro-Teeth and Dish Press (MTP) Design
The innovative Micro-Teeth and Press (MTP) design has many benefits over traditional style grinders. Effortless grinding action, the MTP design creates and utilizes stronger "micro-teeth" that shred from the top and the bottom while simultaneously gently pressing through grinds. Since the MTP design requires far less torque and strength to complete your grind, it allows users with medical conditions and less physical strength to grind almost effortlessly. Easy cleaning- Additionally, Micro-teeth allow the user to remove any loose bits simply and easily with just your fingers. No special tools required. No Spills- With it's recessed cup-like cavity, the MTP design also greatly reduces the likelihood that material will spill out of the grinding chamber.

Friction/Residue Rings
The key to an effortless grind time after time., the friction/residue rings on the GR8TR® grinder create an "Air Ride" by greatly reducing the friction created between the exterior wall of the press and inner wall of the grinding chamber. Not only do the pockets of air make for an easier grind, the rings also act as a residue collector, ensuring the 50th grind is just like the 1st and that your grinder requires very little maintenance and cleaning.

Interchangeable GR8TR® Plates
The Choice is Yours. The GR8TR® patent-pending interchangeable grinder plates have created the first and only grinder with the ability to customize the consistency of your grounds. This means that whether your preference is vaporizers, pipes, papers, or all of the above, the GR8TR® has the grind you're looking for. Like all Kannastör® parts, the plates are made from 60/61 hardened aluminum, then chemically bathed and anodized before being finally inspected by hand to ensure each and every plate meets our rigorous quality and strength standards.

Putting the STöR in Kannastör®
Storage was a major consideration with the new GR8TR® design. Not only was storage added for a second GR8TR® plate, but the folks over at Kannastör® have also added storage inside the grinder top that can be used for either course or fine finished grounds, or for unground material wanted for a future session. Now you can grind, sift and store more than just one blend and/or style of grind at a time.

Portable by Design
Each GR8TR® has been designed with "on-the-go" in mind. The lid and base of each GR8TR® can be easily combined to create a pocket sized storage "puck" so you can grind at home and take your blend anywhere with ease.

Easy Change Screen™
The patent-pending Easy Change Screen™ was incorporated into the  GR8TR® revolutionary design to allow for even more versatility and options. Kannastör® is the only grinder that has the Easy Change Screen™ 100 Mesh Monofilament and 60 mesh styles available so you can customize your sifting too! (30 day Warranty on all Kannastör® Easy Change Screens.™)



3.75" (H) x 2.125" (D)