4.0 out of 5 stars I love it as a carrying case, not great at grinding. I personally would give this grinder 5 stars. I purchased it as a reasonable sized carrying case I could poke a glass batty in… that also grinds. The fit and finish is fantastic, and I love to for a weekend holder I can carry in my pocket.
Regarding this, what is a 3 piece grinder?
It has two pieces that serve as grinding portions, coming together with a third piece, to form a practical crusher. As you twist these three components, herbs are ground into smaller fine bits, falling through these holes into the lower portion of the chamber.