DIAMANT D.525 Hand mill for any Kind of Grain Big V-belt flywheel is made of solid cast iron, not aluminum. Adds momentum to the turning action, rotates smoothly and makes it easy to motorize. Adjusts quickly and easily from powder-fine to coarse. Long wooden handle lets you use two hands for more leverage or share the work with a friend. Bushing/sealed bearings eliminate maintenance - never need to be oiled! Solid cast iron - Built to last with little maintenance!