The one and only Mason GrinderTM, the most handy grinder you can buy. Just easily attach the grinder to any mason jar of your choice, pop in a bud, grind it up and watch it fall through the holes into the jar below. Great for morning grinds that get you through all day, it will stay sharp and last thanks to its heavy duty Lexan material. Get your grind on and grab one for yourself and a friend.