Beautiful machining out of squeal steel (stainless). Triple parallel threads make for a 1/3 turn to tighten threads and allows for 3 thread entry points. Hollow ground cutters for most efficient cutting…. Too many well thought features to list them all…. simply the best grinder I ever used. My big one has been heavily used for well over a year. I ordered a bigger screen a new friction gasket. I also have the smaller one that I use occasionally. The big one is as good as the day I put it into use. THANK YOU!

What I love about iaso first is the stainless steel and second and more important is that the grinder does not gum up and get sticky and hard to turn. I have both this big guy and the little one too and they are my go-to grinders now.

Worth it! Puts every gas station grinder to shame. Buy once cry once

Absolutely awesome! Very easy in the hands far as grinding goes and very smooth as well , consistent medium grind fluffy grind every time!

These grinders are truly a work of art! I’ve been in manufacturing for 20 years and the attention to detail is unmatched. Not only did they design it for flawless functionality they used material (stainless) that is going to outperform and outlast anything else out there. I also have the smaller 4 piece and performs on the same level, but in the perfect size for on the go.

Impressive. This is the perfect grinder. Bought a Four Piece Stainless Steel Grinder 2.5" for myself a few months ago. Loved it so much, I recently bought three to give as gifts. No toxic aluminum or pealing coatings to inhale, dishwasher safe, built to last. Buy one!! Highly, highly recommended. Thank you Iasogoods!!

This is the perfect grinder. Bought one for myself a few months ago and loved it so much, I recently bought three to give as gifts. No toxic aluminum dust or pealing coatings, dishwasher safe, EXCELLENT customer service. Buy it!! Highly, highly recommended. Thank you Iasogoods!

Like I said, the grind is very quality is worth every bitter the money I recommend it to anyone who’s looking for a grinder. He gets the job done. Very satisfied. Lawrence Lee.

I have used both the 2.5” 4pc as well as the 1.75” 4 piece grinders on a daily basis for over a year now. That are as perfect now as the day I bought them, with zero maintenance during that time. Contrary to some posts I read on the internet prior to buying, the labyrinth seal system does NOT clog up, even with heavy, sticky buds and no cleaning. These grinders are a rare example of form meeting function. They do the job perfectly, while the superb machine work demonstrates the pride involved in their manufacture. They go everywhere with me, and I still get pleasure every time I use either one! Thank you Iaso!

I’ve used this grinder for about 3 months and I must say when I first went to buy the product I was a bit weary about paying the higher price but the quality of the metal , the grind quality and all in all the experience I get from it 11/10