Hario's Skerton is one of the most popular grinders on the market. The 'hopper' will hold enough beans to nearly fill the jar below. There are 3 massive bonuses to this grinder. 1) the silicon lid keeps any beans from leaping out onto the kitchen floor. 2) the jar comes with a lid so you can grind more than you need for the day and seal it to keep it fresh. 3) The grind adjuster is easy to use and makes fine adjusting your grind easy to lock in.