Four Piece Stainless Steel Grinder 2.5"

Now: $169.99
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The Party Size version of our already proven 1.75" Grinder!

Our 4-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!

What is a Kief Catcher and how does it work?

Our 4-Piece grinder features a screen and a kief catcher chamber on the bottom. The mesh screen (available in fine and medium micron) gathers all the potent kief (trichomes) that were knocked off the buds during the grinding process. Kief will start to accumulate in our specially-designed bottom chamber after your first use. Smooth curved walls were included for easy kief gathering. You can sprinkle kief on top of a bowl, in a joint, or use it in cooking and baking your favorite meals and treats! As an added bonus, the kief chamber may double as a stash container for ready-to-go grinded flower. Elevate your experience by upgrading your grinder to a 4-Piece! 


  • 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



39 Reviews

  • 5

    Published by Lynn on Jan 12th 2022

    For the connoisseur of fine grinders this one is an absolute must. The craftsmanship is superior to anything out there and as a result takes this beast to a level of artistic beauty. iaso, well done.

  • 5

    Published by Unknown on Jan 1st 2022

    Well worth the price. Very high build quality, works amazing, and will last a lifetime!

  • 5
    Simply an awesome piece!!

    Published by Devin on Dec 28th 2021

    This is an amazing machined piece for your flower! It has a clean finish, good heft, and functions super smooth.

  • 5
    Great grinder

    Published by Alan on Dec 23rd 2021

    I bought this grinder because it’s stainless steel. Easiest to clean. Easiest to grind without covers sticking . I like the fact that it’s not aluminum and I’m hoping safer to use. The grinder is beautifully designed and after a few months we of use , I still am Impressed. I have 3 other grinders that received top ratings at the usual review sites and I’m surprised that this model is so much better than the others I have used.

  • 5
    Cool grinder

    Published by Jacoby on Dec 18th 2021

    Very heavy and high quality feel and fit. Excellent grind size that works well with the volcano and for rolling. I love not worrying about aluminum in my flower.

  • 5

    Published by Duane Sprague on Nov 21st 2021

    Very happy, best grind, going to last forever

  • 5
    4 Piece stainless steel grinder 2.5"

    Published by Ned on Sep 1st 2021

    This is a superb grinder that goes way beyond simply excellent function. It is a work of machinist's art. Quality, function, fit, and finish are all truly phenomenal. The only thing I can imagine to improve it would be to make one out of titanium, which I would definitely buy. I cannot recommend this grinder highly enough.

  • 5
    Today I received my grinder, it is unlike any other grinder I have had till now. It is very easy to operate and works smoothly. I no longer need to use any power. I also would like to thank the Iaso team and especially Jamie for their endless pati

    Published by Diana on Aug 10th 2021

  • 5

    Published by Streetlife on Jun 17th 2021

    The quality and craftsmanship of this grinder is impeccable. Iaso is an amazing and professional small business that I'm very satisfied with.

  • 5
    Four piece steel grinder

    Published by Robb on May 26th 2021

    Most amazing grinder I’ve ever had, it’s heavy and sturdy. I will say that I wish the middle holding have was vertically deeper so I can fit more in it at a time. I feel like I won’t need a new grinder for a long long time and that makes me happy. Good job team.

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