Made from cast iron and does a good job of crushing grains for brewing. Fresh crushed grain is always better for your brew. If you are going to store grain, it is better to crush it fresh each time. Using a 10 inch Funnel with the tip cut down and set on top of the Victoria (Corona) mill hopper is a good, easy way to increase hopper capacity to about 5 pounds. The Victoria (Corona) Mill can be motorized with an electric drill by replacing the handle with a hex head bolt and locking nut and using a socket but to fit the hex head. When motorized it's fast and flexable. Adding some flat washers to the mounting bolts of the assembly between the stationary grinding head and spinning grinding head gives a large amount of grinding flexability. Much less expensive then a Phil Mill and does a good job of crushing.