2 Adjustable Steel Rollers for Precision Grinding：Malt Grain Mill with 2 durable stainless steel rollers that resist rust and wear. The gap between rollers is adjustable from 0.025 to 0.1 inches (recommended 0.05 inch) via screws, ensuring uniform grinding for malt grains of varying densities. Malt Crusher minimizes husk damage to enhance malt sugar extraction during brewing. Stable Wooden Base：Grain Crusher features a sturdy wooden base that sits securely on flat surfaces or standard 5-gallon fermentation buckets, allowing flexible positioning during operation. Large-Capacity Aluminum Hopper: Spacious hopper of malt crusher grinder boosts productivity with 7 lbs of grain. Open hopper design allows real-time monitoring and continuous feeding. Barley grinder's hopper is crafted from corrosion-resistant, thick aluminum for durability and easy cleaning. Two Grinding Modes Optional：The grain crusher grinder can be operated manually with a crank handle or motorised with a 3/8 hexagonal drill (200-300 RPM recommended, drill not included), which helps to increase efficiency and reduce the strain on your arms. The crankshaft handle can be rotated clockwise or anti-clockwise without affecting the grinding results. Multi-Grain Compatibility：Malt Crusher perfectly crushes wheat, malt, barley, and other beerbrew homebrewing grains. Note: Malt Mill is not suitable for large grains like corn/soybeans, flakes, or flour.