Generic Stainless Steel Electric Pepper Mill Grinder Muller 1) Powered by 4 AA batteries (not included) 2) Stainless steel outer shell, gorgeous and friction-resistant 3) Suitable for milling pepper, corn, mustard seed and other small sized spices 4) With a screw at the bottom to adjust the finesse / coarseness of the outing pepper 5) Diameter: 2 inch / 5 cm