My 4th IASO grinder. First one went overboard in the Potomac River, my sons was stolen, ordered replacements immediately as these are the finest grinders available. Stainless steel is very tricky to machine and they’ve mastered it. Triple parallel threads on all threaded parts allow opening in only 1/3rd of a turn. Magnetic lid holds tight a frictionless collar makes grinding easy. Blades are very sharp, hollow ground, after 2+ years it grinds as good as day 1. (It get used lots)

I mainly got this because it matched their storage containers, but it but I can say it is just as good as my BCG and Old Mate. I accidentally got the four piece and only wanted the three though. :(

I absolutely love this grinder.

Really nice, well made machined tool. Someone put a chunk of stainless steel in a cnc machine to make this thing. American made too! You get what you pay for!

The nicest grinder on the market, not even close. Nice coarse threads with matching terminations, making it almost impossible to crossthread. Coarse makes for little rotation to close it, and keeps the threads from fouling with the sticky. The nice rotation bushing under the lid is a great touch, one that is often overlooked. If I had one critique, a slightly deeper well for grounded herb would be nice. However I still rate 5/5, it is simply the best and last one you will ever buy.

I am very happy with my purchase. Build quality is excellent and it grinds nicely. I love the fire hose threads and replaceable screen. My factory second looks and functions just fine. The only flaw I can find is a small ding about 1mm in size. I have two critiques: the labyrinth seal is probably not necessary, and the magnetic center post extends from the lid and not the grinder body. This creates a situation where you have to be careful placing herb as to not interfere with the center post. I personally feel the center post is better placed in the grinder body, not the lid.

I am very happy with my purchase. Build quality is excellent and it grinds nicely. I love the fire hose threads and replaceable screen. My factory second looks and functions just fine. The only flaw I can find is a small ding about 1mm in size. I have two critiques: the labyrinth seal is probably not necessary, and the magnetic center post extends from the lid and not the grinder body. This creates a situation where you have to be careful placing herb as to not interfere with the center post. I personally feel the center post is better placed in the grinder body, not the lid.

I've owned this grinder for a month. This may be the perfect grinder. The craftsmanship is impeccable, grinds evenly and smoothly every time, easy clean (dishwasher safe) and it is absolutely built to last. I like the size of this grinder. My iasogoods grinder fits my hand well, which makes it easier to use. No fumbling with a grinder that's too small. I have no regrets about purchasing my iasogoods grinder.

The best I have ever used or owned! Very sharp and smooth to grind, and you feel good about using it. Feels like it is truly built to last forever!

Best grinder ever, I bought the small one and was so impressed that I bought the larger one. Features stainless steel construction , very sharp, machined blades with a hollow grind. Triple parallel threading, 1/3 of a turn opens and closes both threaded fittings. Plastic slip ring is reduces grinding friction and reduces metal to metal contact (lid to container). Top and bottom have machined scalloped edges to provide better griping. Use with or without kief screen and center section. I bought blemished ones because I’m cheap; honestly I could not detect any defects, possibly one section appeared to be less highly polished…. no problem! Would buy again!