- High efficiency grinding machine This device is designed for high output grinding of large quantities. With two rollers, all grains are crushed twice in one cycle. The crushing is performed by a fixed gap between the two upper rollers. The width and roller diameter are optimized for use with drills. - Adjustable grain grinder High performance double roller mill with an adjustable secondary gap. The mill features a 6 inch long adjustable gap, a fixed primary gap of 0.060 inches, a fully adjustable secondary gap of 0-0.065 inches, and two eccentric adjustment devices made of stainless steel that do not wear. - High utility value The 12 TPI knurling and a 4L capacity effectively pull the grain through the rollers while keeping the bowls intact. This provides an excellent filter bed for blowing through with air while minimizing damage to trays. - Easy to use The grinder includes a hand crank but can also be operated with an electric drill with a power cord. No additional attachments are required; simply connect the drill and start. - Use scenarios - In a farm, mill, or workshop setting, process large batches of grain efficiently to support feed preparation or flour-like products. - When grind fineness needs vary, use the fixed primary gap and adjustable secondary gap (0-0.065 inches) to achieve consistent particle size for different grains. - In flexible work environments, switch between manual hand crank and standard electric drill without extra hardware.