Three Piece Stainless Steel Grinder 2.5"

Now: $139.99
(You save )
Write a Review




  • Our biggest 3 chamber herb grinder, perfect for large doses and enjoying with friends
  • Constructed out of 100% Stainless Steel 
  • High quality 3 piece herb grinder made in the USA
  • Strong magnetic lid keeps the top and middle piece securely attached
  • Sharp teeth for an easy and smooth grinding experience
  • Knurled top and bottom piece for exceptional grip and comfort 
  • Specially-designed curved bottom chamber for easy gathering of herb and kief
  • Dishwasher safe and easy to clean and maintain 
  • 100% Money Back Guarantee and Limited Lifetime Warranty
  • FREE SHIPPING on orders $100+ | Ships in 3-5 business days

What’s Included:

  • One (1) large 3 piece herb grinder 


Our 3-Piece 2.5” Stainless Steel grinder is a favorite among our customers! After receiving so many positive reviews and experiences from our already proven 1.75” mini herb grinder, we wanted to create a larger version with the same quality and performance. This durable and sleek 3 part grinder is perfect for larger dosing and makes a positive impression on friends during a group sesh! Best Part? You can load more herb into the grinding chamber! 

The weight and feel of this big herb grinder is durable and heavy duty. Unlike aluminum grinders, it is constructed of 100% stainless steel, making it ideal for medical patients and anyone who has health concerns using aluminum products.  

This large grinder is built with the same design methods and technology used in aerospace and renewable energy fields. It is high quality, guaranteed to perform and last a lifetime.

This 3 piece grinder features our Patent Pending labyrinth seal design. With our exclusive labyrinth seal solution, the top and middle pieces of the grinder are specially sealed together so your herb stays securely inside – no spills and no lost herb to worry about.

Create the perfect grind with just a few turns of the grinder. Sharp diamond-shaped teeth will cut and grind your herb with ease, and knurled top and bottom pieces save you from excessive wrist strain. Removable stainless steel sift screens allow you to choose between fine and medium micron sizes. 

This large herb grinder is truly a game changer. Easily enjoy your herbal medicine anywhere, anytime. Get the best stainless steel 3 piece herb grinder on the market today.


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

► 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 storage container or a stainless steel chillum

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



23 Reviews

  • 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!

  • 5

    Published by William Poulelis on Jun 22nd 2022

    Best grinder I have ever had. I have had many other the get dull and just don’t last. IASO has the best quality and most durable grinders. I wish there was a bigger chamber so it could also be used as a storage with grinder. I have ordered many products from them. Very pleased and excellent quality.

  • 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.

Customers Also Viewed