Acrylic/natural wood. Featuring a corrosion-resistant, stainless steel grinding mechanism (dry sea salt crystals only; not suitable for wet salt or other spices), and carries a lifetime warranty. An adjustable knob on top enables you to choose your grind from fine to coarse. Comes partially filled with sea salt. The same unyielding commitment that goes into every Peugeot pepper mill mechanism is also evident in the stainless steel salt and spice mechanisms. Peugeot grinding mechanisms are the choice of food professionals and discerning cooks around the world. They will delight the finest epicures and will provide an original touch to every table.