Durable Conical Burr: With 40-millimeter stainless steel conical burrs, burr coffee grinder ensure optimal flavor extraction and create uniform grounds. The coffee grinder is designed with a double safety protection,1.Friction clutch prevents damage tothe grinding gear of burr grinder in the event of small stones in your beans. 2.Built-in overheating protection protects the motor of burr grinder to ensure the coffee grinder a long life; Optimal Flavor with 30 Precise Settings: burr coffee grinder has a gear reduction motor, which generates the slow grinding action. The coffee grinder produces less heat from friction and ensures the flavor and aroma of the coffee beans intact.Theburr coffee grinder offers 30 precise grind settings to make everything from an ultra-fine grind for espresso to a coarser grind for french press coffee for your customized brewing method; Large Capacity & Auto-locking System: burr coffee grinder has a large hopper,so our burr grinder is capable of holding 10 ounces of whole beans, the coffee grinder allows to store enough beans for several servings of coffee. The coffee grinderhas a auto-locking system, the coffee hopper on burr grinder can resist the beans from spilling out for easy removal, storage, and transfer of the bean hopper; One Button Simple Operation: burr coffee grinder is easy to operate.The unique rotary button two-in-one one-button design in coffee grinder makes the grinding process very simple and interesting. The adjustable 2-12 cup settings of coffee grinderis good for single cup for one or a large gathering; Easy to Clean: The upper burr lift-off option and included brush allows you to clean the burr coffee grinder with ease.