The Alfredo Salt and Pepper mills are crafted in stainless steel and look stunning on any dinner table. The size of the grounds can easily be adjusted by turning the grey screw in the bottom of the mill. The Alfredo Salt and Pepper mills - tumblers - shakers are crafted in stainless steel. The grinder in both items are an “AllGrind – Ceramic Technology” – this is the highest quality and long-lasting technology of grinds. The size of the grounds can easily be adjusted by turning the grey screw in the bottom of the mill.