This metal precision grinder features razor sharp diamond teeth that ensures that your herbs are ground in an effective manner The Chromium Grinder Blue color is one of our premium grinders in our collection, due to it's multiple functions and ease of use. The grinder features a high end hand mill, placed on the top, adding to the device's ease of use. The mesh screen featured on the bottom of the device allows you to easily sift through your herbs while also collecting resin from the grinding process.