Salt & Pepper Grinder Set Material: solid acacia wood bottle, stainless steel(P) grinder and ceramic(S) grinder, copper nut, stainless steel rotary shaft and base plate. height: 22 cm, lower DIA: 5 cm, upper DIA: 4.5cm (tray is NOT included) (Equipped with a set of ceramic grinding cores, which can be replaced if necessary) .The robust and hard stainless steel grinder(P) cracks peppercorns for even grinding and a rich aroma. The ceramic grinding mechanism of the salt mill is corrosion-resistant and does not absorb aromas or odors. .Adjust the gold knob on the top depending on how finely you want to grind your spices: Turn clockwise (tighten) for a finer grind, counterclockwise (loosen) for a coarser grind .These carefully crafted wooden pepper grinders and salt grinders are great for grinding salt and pepper in their whole form, freshly ground salt or pepper offers better flavor compared to pre-ground options. .The grinders will complement your kitchen table or counter with their elegant style. The sturdy and beautiful shape has the advantages of adopting the streamlined ergonomic design, the holding operation is convenient.30-day free returns 1-year warranty on the grinder 5-year warranty on the mechanism. Ceramic is very fragile. It might be damaged in shipping. Please contact us if the product was damaged upon receipt. Free replacement if the salt and pepper grinder is defective within 365 days. .