These grinders from Space Case are CNC machined from an aircraft grade billet aluminum block using the latest technology. They can quickly and easily chew and grind their way through some of the densest dried products thanks to their interlocking extra sharp, diamond cut teeth.
Since the first Space Case grinders were released they've added Teflon grade O-rings to give a slick grinding action as well as a strong neodymium magnet to secure the lid in place. With a Space Case grinder, you should never need to purchase another grinder again.
As your dried products are finely ground they fall through to the lower level which has a stainless steel screen to filter all the pollen for you to collect from the lowest chamber. They've even included a specially designed scraper to help collect every last little bit.
Small = 2" wide x 1.5" tall (Approximately 5 x 3.8cm)
Medium = 2.5" wide x 2" tall (Approximately 6.4 x 5cm)
Large = 3.5" wide x 2.75" tall (Approximately 9 x 7cm)