Gravity Electric Salt and Pepper Grinder Mill Shakers Adjustable Automatic Features: 【High Quality Materials】Stainless Steel/Pastic & Acrylic Material, top quality Ceramic Rotor offers long time durability and can grind against the toughest peppercorns, be it salt or other spices. 【Automatic Operation】Just simply turn upside down and get fresh ground salt or pepper. Allows you to activate the spices you like with one hand, while the other hand is free to handle other kitchen tasks. 【Adjustable Coarseness】 Turn the grinder knob at the top part of the device to adjust your favorite coarseness. Rotate clockwise into fine particles and rotate counterclockwise to grind into coarse particles. Our sea salt grinder selects a high-density ceramic grinding core to easily and smoothly grind any spices without altering its flavor, suitable for black pepper, white pepper, sea salt and other solid grain seasonings. Specifications: Material: Stainless steel, ABS, acrylic, ceramic grinding core Size: About 2.48 * 7.87 inches Battery: 6 * AAA batteries for each one(not included) Package included: 1pc x Electric Mill Grinder