Kyocera Advanced Ceramics Pepper, Salt, Seed and Spice Mill with Adjustable Advanced Ceramic Grinder, The Everything Mill-Black The advanced ceramic burr mill mechanism is non-reactive & will never rust The durability of this mechanism will outlast any metal-based grinding mill The ceramic burr mill will not react to or absorb flavors from any spices. Enjoy a consistent fresh taste over and over again! The glass base is reusable and dishwasher safe Material Composition: Burr Mill Mechanism / Body: Glass / Top: Acrylic Adjustable dial: For fine to coarse grinds Re-usable glass container is dishwasher safe Advanced ceramic mechanism is non-reactive and will never rust Grinding mechanism made out of zirconium oxide; durability outlasts any metal-based grinding mechanisms