2.4 Herb Saver Grinder "3.8" x 3.8" Unlike your regular grinder, Herb Saver designed one that not only shreds but also fluffs your herbs. Pollen may be easily stored and collected with Herb Saver grinders. We do this by providing the user with a big storage compartment/pollen catcher equipped with a friction fit removable screen for simple cleaning and replacement. Our grinders are composed of medical-grade polypropylene. Herb Saver grinders allow you to ground your herbs with ease while also preserving all of your herbs and pollen in a clean environment