This Grace Glass Amsterdam grinders with Ganash and OM logos are in mix color measures 50mm in diameter. It is composed of 4 parts. The Ganash and OM logos are imprinted on the magnetized lid that fits securely the teeth bottom. In the middle part there is a screen that holds the remnants from your herbs. A scraper will help you gather them to reuse them. This grinder will come with 12pcs of mix colors in a box.