Grinds upside down and stores upright to leave no mess on countertop or table. The ceramic grinding mechanism works on salt, peppercorns, dried spices, flax seeds, herbs and herb blends. The ceramic mechanism is fully adjustable from fine to coarse and will not rust or corrode. The base is made of glass with a plastic lid. The grinder is 5" tall, PBA and dishwasher safe. There is a 25 year guarantee on this grinding mechanism.