Our most popular grain mill! A high quality, precision-machined mill that is easy to set up and use. A consistent, precise crush is vital for making the best beer possible, and The Barley Crusher delivers. This mill comes with a lifetime warranty from the manufacturer and some of the best features on the market: Solid base fits easily on a standard 6.5 gallon fermenting bucket. Adjustable rollers with a .015 to .070 range.Materials that will last a lifetime: 1018 Cold Rolled Steel for the rollers, 6061 Aluminum for the mill body and hopper, tool steel for the axles with oil-impregnated bronze bushings.5-inch rollers have a 12 TPI knurl that pulls grain through while leaving the hull intact to form an excellent filter bed for sparging. Large hopper holds approximately 15 pounds of grain.Includes a hand-crank but no adapters are needed to use a 3/8 drill motor; using a 3/8 drill motor at 500 RPM gives a throughput of 6 pounds a minute.