From Cole & Mason, the London Wood Salt Mill features:  Salt mills are fitted with an ultra sharp ceramic mechanism which does not corrode with time To clean, wipe the mill with a damp cloth and use a clean cloth to dry We recommend you do not use any cleaning products as this can affect the aesthetic finish of the product Do not immerse in water or place in a dishwasher All Cole & Mason salt and pepper mills are covered by a lifetime mechanism guarantee In the unlikely event you are experiencing any issues with the mechanism in your mill, please contact the Cole & Mason customer service team and they will be happy to assist you Mills come unfilled, individual mills with swing tag, set packed in gift box Approx. 12" tall Imported.