Made from durable acrylic, the London mill both honors our heritage as well as looks to the future with a classic, yet contemporary aesthetic which will prove a stylish addition to both traditional as well as modern kitchens. Easily adjust the grind from fine to coarse by turning the knob on top of the mill and they are made from premium clear acrylic with metal accents, the mills come partially filled. Clean with a microfiber cloth to keep the mills looking their best. Salt mills are fitted with an ultra sharp ceramic mechanism which does not corrode with time. Pepper mills are fitted with a design registered Precision+ carbon steel mechanism, that strips peppercorns instead of crushing them, ensuring maximum flavor release from every turn. To clean, wipe the mill with a damp cloth and use a clean cloth to dry. Do not immerse in water or place in a dishwasher. All Cole & Mason salt and pepper mills are covered by a lifetime mechanism guarantee. Mills come partially filled, Individual mills with swing tag, set packed in gift box.