mueller ultra-grind conical burr grinder professional series, innovative detachable powderblock grinding chamber for easy cleaning and 40mm hardened gears for long life mueller austria mueller ultra grind conical burr grinder explores an array of fresh coffee aromas. the precise grinder makes perfect ground coffee for espresso, french press, drip coffee, pour over and more. this burr grinder lets you fine tune your coffee with its 12-grind sizes range each with micro adjustments to fully extract the flavor of coffee beans for every coffee brewing method. regardless of the type, roast, or origin of your coffee beans.