Monster Brewing Hardware MM3 3 Roller Mill with Base and Hopper, 11 lb Heavy-duty triple-roller homebrew mill is designed for motorization (can be powered with a corded electric drill) and features an average throughput of 8 lbs./minute and adjustable gap spacing for fine-tuning your crush. This is the mill if you're brewing large batches, or want to maximize mash efficiency at any volume. The MM-3 crushes all your grain twice, with one pass through the mill. The initial pass slightly flattens the grain, and gets it ready for the next crush, that breaks apart the grains and loosens the starch with minimal husk damage. Includes roller assembly, base, and steel hopper with 11 lb. capacity - just add a corded electric drill or a 3/8" crank handle (pictured, but not included) for the ultimate pre-mash gristing experience. 6061 aluminum block frame with three 6" long x 1.5" dia. knurled steel rollers riding on SAE 841 oil- impregnated bronze bushings