These 63 mm grinders from Plazma have got to be one of the best value grinders out there. For just 19 bucks you get a high quality, CNC machined aluminium grinder with separate herb and pollen chambers! The mesh metal screen is just the right porousness to allow only the finest, most precious bits to fall through. This herb grinder is made from 4 pieces: The top, the teeth, the herb chamber, and the pollen chamber on the bottom. Currently available in black only.