Three Piece Stainless Steel Grinder 2.5"

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The Party Size Version of our already proven 1.75" grinder! 

Our 3-Piece 2.5” Stainless Steel grinder is another favorite among our customers! After receiving so many positive reviews and experiences from our already proven 1.75” grinder, we wanted to create a larger version with the same quality and performance. It is fully constructed out of 100% food-grade stainless steel, guaranteed to perform and last a lifetime. The weight and feel of this grinder is durable while only a few turns achieve the perfect consistent grind. Sharp teeth will cut and grind your material with ease minus excessive wrist strain. This durable and sleek grinder is perfect for larger dosing and makes a positive impression on friends during a group sesh! Best Part? You can load more material into the grinding chamber!


  • 2.5” in diameter
  • Constructed out of 100% Medical Grade Stainless Steel
  • Sharp diamond-shaped teeth and deep cutting area
  • Smooth & Seamless grinding experience 
  • Knurled lid and bottom for exceptional grip and comfort 
  • Removable Stainless Steel Kief Catcher Screens (available in fine and medium micron)
  • Heavy Duty Magnetic Lid
  • Sleek Stainless Steel Finish 
  • Specially-designed curved bottom chamber for easy gathering of material or kief
  • Dishwasher Safe + Easy to clean
  • Gift Packaging Available- Comes packaged in a Vermont-Made novelty wood puzzle box
  • Limited Lifetime Warranty
  • 100% Money Back Guarantee



18 Reviews

  • 4
    Grinder is dope.

    Published by Tanner Morton on Apr 1st 2022

    Honestly ill never end up buying anything from this conpany again! This is the best grinder i have ever used and will probably last me the rest of my life. Iaso makes awesome products that will last longer then you. Thanks for doing what you guys do.

  • 5

    Published by Linsey Griffin on Jan 5th 2022

    We're trying to buy sustainable items that will last a lifetime, and this fits the bill. It is beautifully machined and very fun to use. My husband is thrilled with his gift.

  • 5

    Published by Ben on Sep 10th 2021

    The fit and finish are exemplary. Machining is all very clean, and the brushing is very well done. The grip on the lid is very nice compared to most knurling. The lack of chamfer at the bottom of the grip makes the right angle cut a bit sharp, so watch out for that. All threads are smooth and easy to turn, but also feel like they lock in position. The magnet is strong, but the grinder is still very easy to turn. The deep blades are sharp and cut through material effortlessly. When the grinder is upright, material grind to a medium coarseness. With the 3-piece, you can invert the grinder and make several additional turns to get a very nice, fluffy grind. I like to clean it by filling the lid with isopropyl, "grinding" that while it's inverted, then flipping it and grinding a little more. Then running under water, and it's like brand new.

  • 4

    Published by Tabatha on Aug 21st 2021

    This is a great product. It came as a four piece, I use it as a three piece taking out the screen section. It's easy to fill, grind, and dispense. The grind is fluffy making it burn nicely. The design reduces the work for my troubled hands, I am thankful for that. Would absolutely recommend this grinder.

  • 5
    Three Piece Stainless Steel Grinder

    Published by Mike on Aug 19th 2021

    The ultimate grinder!!! I've tried every "high end" grinder out there, including other stainless steel brands. This Iaso grinder is hands down, the best quality grinder I've tried. The machining on this piece is top quality. Pieces all fit together super easy, no finicky threads. I've only put about 2 ounces through it so far, but it has performed flawlessly. All my other grinders ended up with threads that got stuck, or would stick. With this design, those issues are gone. This grinder is a tank. It does its job well, and its built to last.

  • 5
    Great Grinder

    Published by Roberta on Aug 10th 2021

    Very well made. Ordered the 3 piece but got the 4 piece. That’s ok, you can just take one piece out and you have a 3 piece and in case I want to start saving my kief again, I’ll just change it back to the 4 piece. Last grinder I will have to buy. Beautiful.

  • 5
    Finally something of Quality

    Published by RJB on May 11th 2021

    Choice of material (alloys) matters, and this Stainless Steel Grinder trumps any anodized aluminum out there. Most notable differences: lack of sticking or needing to clean; typical grinders start sticking after 15 to 20 grams worth of use and tend to get worse over time leading to jams. One of the easiest grinders to turn as you work through plant material. The Kief catcher is perfect for using most with every grind while maintaining a crust that can be scraped down whenever you want a little more. The output of the grind could be better (i.e. does not rate the highest for breaking up small hard buds) as a future enhancement, but hands down this is the grinder I would buy if I smoked daily or wanted that unique piece that no shop has.

  • 5
    3 Piece Steel Grinder

    Published by LM on Apr 13th 2021

    Best grinder I've ever used. Smooth operation, easy cleaning. Awesome product!

  • 5
    Fantastic grinder

    Published by Ashley on Jan 3rd 2021

    I love the weight and size of this grinder. Also, its very sharp teeth do their job quickly and efficiently.

  • 5
    2.5inch grinder

    Published by Michael on Dec 16th 2020

    Very good, nicely machined. The double walled rim is a good idea.

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