This is my personal grinder and its F**KING awesome, this is by far the best manual grinder i have ever used! The teeth may look blunt and useless but just try putting your MJ in it, even the wet stuff is not match for this badboy! It may be expensive for a grinder but its worth the extra dollar. The outer rim has finger grooves making it easier to grip the grinder, even with sweaty hands. I would give this grinder a good 9/10 as it is the best grinder iv EVER used!