NEW! Three Piece Stainless Steel Grinder 2.5"

Now: $139.99
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  • Our biggest 3 chamber grinder made in the USA
  • Constructed out of 100% Stainless Steel 
  • Strong magnetic lid keeps the top and middle piece securely attached
  • Super sharp teeth make for an easy and smooth grinding experience
  • Knurled top and bottom piece provide exceptional grip and comfort 
  • Specially-designed curved bottom chamber now holds up to 10 GRAMS!
  • Dishwasher safe and easy to clean and maintain 
  • 100% Money Back Guarantee and Limited Lifetime Warranty


Introducing our new & improved 2.5 inch 3-piece stainless steel grinder -- you asked for a deeper bottom, now you've got one!

Our grinders are meticulously crafted to elevate your grinding experience to new heights. Each detail is carefully considered, ensuring optimal performance, durability, and convenience. Designed to last a lifetime, this grinder embodies durability and functionality, making it an indispensable tool for every cannabis enthusiast. 

Constructed from 100% stainless steel, this grinder is built to withstand the rigors of daily use. Its heavy-duty construction ensures resilience against wear and tear, promising longevity that surpasses expectations.

Equipped with diamond-shaped teeth, this grinder effortlessly grinds your herb to the perfect consistency with each twist. The precision-engineered teeth ensure a smooth and consistent grind, allowing you to extract the full potency and flavor of your herb with ease.

Sleek and compact, this grinder boasts a minimalist design that exudes sophistication. Its ergonomic build fits comfortably in your hand, while its compact size makes it ideal for travel and on-the-go use. Plus, the stainless steel construction guarantees effortless cleaning and maintenance, ensuring hassle-free operation for years to come.

Experience the ultimate in grinding perfection with our 3-piece stainless steel grinder - a durable, sleek, and heavy-duty companion designed to last a lifetime.


  • Material: 100% Stainless Steel
  • Width: 2.5 (in)
  • Height: 1.8 (in)
  • Depth: .5 (in)

What’s Included:

  • One (1) 2.5" 3-Piece Stainless Steel Grinder

► For a smaller 3-Piece Grinder, order our 3 Piece Stainless Steel Grinder 1.75"

► For a large grinder with a kief catcher, order our 4 Piece Stainless Steel Grinder 2.5”

► Add accessories like a stainless steel debowling ashtray or a stainless steel chillum

If you have any questions or need any help, please visit our contact us page.



29 Reviews

  • 5
    Three piece stainless grinder 2.5”

    Published by Edward Lee on Feb 20th 2024

    This is my fourth Iaso grinder. I also have the four piece 2.5”, and two four piece 1.75” inch grinders. I love the three piece 2.5” because of the added capacity without the kief catcher…I can easily grind an eighth without overfilling the base, making it great for larger quantity grinding as well as easy cleaning. The quality is exactly the same as every other Iaso product..flawless! The 1.75” models are great for tasting and testing different strains in small amounts, as well as perfect small travel grinders. Iaso grinders are beautifully machined, offer highly effective and consistent grind, and they are made in the great state of Vermont. What more can I ask for? Thanks Iaso!

  • 5
    Amazing grinders!!!

    Published by VALERIE on Feb 15th 2024

    I have not yet received my new grinder. However 3 years ago I ordered the small one and I love it so much. It is a bit small for large jobs, but it is just as sharp as day 1. I only ordered the large one because my hands don't work as well as they used to and I need something better to grip. I love love love the gasket and even ordered a couple replacements for down the road even though I have not had to replace my current gasket even after 3 years of use. I know these might seem a bit pricey but you get what you pay for. I do not have any metal shavings in my greens like with other grinders. And I know based on the little grinder, the big one will last me the rest of my life. Thank you iaso for providing such an amazing product. I always tell my friends and family about your products.

  • 5

    Published by Chris Valdez on Feb 12th 2024

    The best grinders I have ever owned

  • 5
    Supreme Grinder- 3 piece 2.5"

    Published by Nick on Dec 31st 2023

    This has become my favorite grinder. Noticeably heavier than my aluminum grinder, which is to be expected. Smooth effortless grinding function with sharp blades. Love everything about the machining! Highly recommend

  • 5
    What an improvement!!

    Published by Mike Sussman on Dec 22nd 2023

    The modification to make it grippier is a huge improvement for folks with reduced dexterity. My daughter received the earlier model as a gift so she is happy as well!

  • 5
    2.5 inch 3 piece

    Published by Tayte on Dec 6th 2023

    Amazing. So happy to have a stainless steel grinder! Substantially more superior than aluminum.

  • 5

    Published by Chad on Mar 22nd 2023

    Wonderful Grinder Smooth and very effective!!! The engraving came out perfectly.. Will definitely pick up another one

  • 5
    Amazing grinder

    Published by Dave on Dec 14th 2022

    You wouldn’t think a super premium grinder could make such a big difference. First my Top Tip: Get the bigger grinder! It’s the perfect size but I would not recommend the smaller size. On with the review. This is the best grinder available! Here’s why: 1. Stainless steel: super durable and no coatings or finishes to flake off with use. 2. Ease of Use: this is the easiest turning grinder I’ve ever used. The design keeps the flower stickiness from gumming up the grinding so it keeps rotating freely even after considerable use. 3. Design: the teeth design is really smart. There are spaces between teeth for you to place your chunky bud and the grind quality is excellent. The whole design is well thought out and allows the proper size grind to fall through into the concave scooping chamber at the bottom. 4. Easy to clean: it needs cleaning far less frequently and is super easy to clean. Pour in a little isopropyl alcohol and shake. Dump the alcohol and let dry. In summary, if you have the means this is the absolute best grinder available. It is totally worth the investment and will last forever. Happy grinding my friends!

  • 5
    Love IASO grinders

    Published by Di on Dec 9th 2022

    Very stylish and functions as promised. I love my grinder purchase.

  • 5

    Published by james gray on Nov 14th 2022

    best damn grinder i've ever used! and the customer service is phenomenal!