My salt and pepper mill sets have been made from various species of woods that have been laminated to create an attractive mill. For the salt I use an 8" mill that has a ceramic grinder to prevent corrosion and I use a 10" mill for the pepper that has a steel grinder. The mills have been turned by hand on the lathe and no two are exactly alike. Both mills are fully adjustable via the knob on the top. I finish all of my mills with a wood sealer then several coats of lacquer for a durable finish. These are an attractive and great mill to use in the kitchen and on the dining table.