This Mill is a great tool for efficiently grinding malted & non-malted barleys, corn, & grains. Adjustable gap setting for grinding grains & other materials to perfection. It comes with a longer shaft so you won't hit the pail while grinding with the hand crank. The rollers are made of Stainless Steel. The Standard Hopper holds 10 lbs. It has a solid base & can be easily attached to a drill w/no extra parts. When using a drill at 500 RPM you can crush up to 6 pounds per minute. easily adjusts to different size buckets. **Assembly is required**