This is a nice looking, solid and durable grinder but it's a bit hard to use. Maybe mine is just defective but it will only rotate through about 30 degrees before it binds up because it's not perfectly circular. Trying to force it to rotate further will cause it to bind so tightly that tools are required to get it open again. That said, it does it's job just fine without having to rotate it through all 360 degrees. It's also very large, larger than I anticipated, and dumping out the ground-up herb without spillage can be tricky.