1.HIGH QUALITY&SUPREME GRIND- This salt and pepper grinder designs delicate which have both salt and pepper in one piece, The separator in the middle prevents spices from mixing together.Two ceramic grinder systems make grind quickly and smoothly .Sturdy stainless steel is durable and rust-resistant ,Making your cooking healthier and faster. 2.FULL OF FRESHNESS-Ceramic burr mills are best to crush salts, since salt is as compatible with ceramic grinding parts,Sealing structure can keep your salt and pepper fresh longer and preserve their flavor,which can also reduces moisture getting into the salt or pepper and keeps you free of dust, residue. 3.ADJUSTABLE COARSENESS-According to cooking needs or tastes to adjustable the size of grain. Remove the cap at each end of the grinders,and turn the knob,you can choose your preferred for a fineness or coarseness(dried herbs, coarse sea salt and other kitchen spices) 4.REFILLABLE & SAVE SPACE -The grinders is refillable for a variety of spices.The storage material is made of sturdy glass, which can visually see the remaining spices, and replenish them in time. 5.EASY-TO-USE AND REFILL: The Mill Salt Mills are for novices and experts alike-anyone who wants complete control over the seasoning of their dishes