This grinder uses a chute instead of a doser traditionally found on semi-commercial grinders. A retaining fork holds your portafilter handles as you grind directly into it. A doserless grinder will reduce wasted and staled coffee by grinding only what you need. No coffee is left behind. The Rocky can be quickly and accurately adjusted using its 55 different grind settings. To make the adjustment you just push down on a release lever and turn the bean hopper. You can quickly and easily change from course to fine. It can grind your beans into a fine powder for Turkish coffee or espresso and even course enough for French press. With a Rocky the most particular barista will be able to fine-tune their extractions to perfection. The Rocky’s motor is legendary. It is the same motor that Rancilio uses in the Commercial MD40 grinder. It is a 166-watt direct drive motor that is very quiet and extremely powerful. It will not slow down even under the most demanding workload. The motor alone weighs around 12# and spins at 1,725RPM. It has a high temperature overload switch to prevent possible damage if a stone gets caught in the burrs. Like the motor the grinding burrs on the Rocky are the same ones that Rancilio uses in the commercial MD40 grinder. They are the flat plate style and 50mm in diameter that are even designed to handle a commercial load.