Cafe de Tiamo Hand Coffee Grinder Ceramic Conical Burr Skerton (HG6074) Ceramic Conical Burr - Durable and available for water cleaning Beans feeding design ensure beans drop into burrs continuously Silicone rubber lid prevent dust and beans skipping out during griding Silicone Ring "Plug & Use" body design. Grinding fineness adjustable Material : Plated Iron (Bean Hopper), Wood (Body & Coffee Container), Ceramics (Burrs), Silicone (Lid)