This grinder features a unique swivel locking system that enables users to grind their herbs and drop them into the compartment below gradually. The herbs then drop down onto a fine mesh screen that filters through the most potent parts of your herbs and stores it in the lower compartment. Over time, these sifted herbs will build up into a fine powder that you can add, either when your herb is finished, or when you want to add a little extra potency. Other features include Dead Head by Chongz branding on the lid and a small plastic scraper for easy cleaning.