A company called Quantum Crush sent me their herb grinder to test out and review so I wrote this article as well as did a video to show how well it works. The first thing I noticed when handling this is that the top is magnetic and hold together fairly good. The magnet is in the middle of the grinder. When you unscrew the various chambers it has a smooth feel while unscrewing and feels well machined. The photo above shows the various parts which are the cover, the grinding section, a 100 micron screen section for separating pollen, and the collection section. You can use it without the screen section and have the herbs go directly into the collection chamber. Below are photos of all four sections together and just 3 sections together.
Below is the video I made showing how it works grinding peppercorns, sage, and garlic. I grew tobacco a few years ago and this would be excellent for grinding tobacco.
Overall this is a very well made grinder and I highly recommend it. It's one of those things that you didn't know you needed until you try it. They are available to purchase from Amazon at this link: Quantum Crush Herb Grinder