Just so potential purchasers aren’t surprised like I was: The M-Modal burrs I purchased in late 2025 are not coated and stainless steel. After rereading the product description it’s listed clearly there. However, I was thrown off by the product pictures. No matter, will make it easier to season and still last for years.

So far, the cups are juicy, flavour is sweet with a creamy texture. Sense some bitterness in the finish but I’m hoping it goes away after seasoning. I can say I already prefer it to pourover from 64mm SSP lab sweet V2 cast burrs, stock DF64 burrs. I think it already produces cups as good or better than my 1zpresso JX as well. Wouldn’t hesitate to recommend to anyone who enjoys pourovers.

Let me tell you a story. The burrs I got were not the burrs I ordered.

They were Modal-M by Peitro. Which AFAIK don't exist as an official product.

They were not coated, the name was laser engrave very poorly. But they taste great!

Anyway, Eight Ounce reach to me with a real human being (a decent one at that) inform me of their mistake and offer me replacement.

Impeccable service. I admit I will miss this weird unofficial product, BUT the way Eight Ounce handled it makes me confident to order again and again.

So at the time of writing I cannot tell you if the ProBrew are good burrs, I can tell you the Model-M are and Eight Ounce customer service is commendable.

The pro brew burrs are the main reason for getting a Pietro and separates it from other hand grinders. Both sets of burrs require seasoning. The pro brew are more difficult to grind with but one can tell by eyes the difference in particle size distribution.

i have both the MP pietro burrs and these, and one thing these burrs do, on top of clarity, is just suuuuch a silky velvety mouthfeel!!

to be noted however, that in my personal experience, both burr sets, out of the box produced a disturbing amount of fines (i was very confused, especially comparing myself with what everyone was saying online) ....this resolved gradually after maybe 1-2kg of grinding (seasoning, I guess) ... Lance Hedrick himself also told me that their particle distribution tests were done after 2.5kg which maybe gives you an idea.

if you're like me and had the MP and are switching to the Pro Brews, you'll notice that the grinding is a bit harder and longer due to less pre-breakers (4 instead of 8)

they can indeed do espresso at the finest setting (1 and below depending on your basket size and machine type ⎯ for Flair Pro 2 can grind coarser because of deeper basket) ...when i first started using them, i used to be able to grind coarser (around 2) and still hit espresso range on my breville dual boiler, but this has shifted as the burrs were seasoned, because obviously all the fines i was getting at the beggining were favoring espresso resistance, which i now have less of.

all in all, i think these burrs are not only worth it, but in my opinion the main reason you should go for this grinder, because other than its slick looks, there are maybe other better options out there. but this is a burr review, not grinder review ;)