Features . Tribest Grain Mills are hand-crafted with precision German engineering. All of the Tribest mills feature stone mills to create an ultra fine grind without the heat associated with stainless steel mills. The grindstones in Tribest mills are made of natural corundum stone that has been mixed with a special ceramic to create an ultra-hard stone that resists chipping and wearing. Plus they are encased in beautiful beech birch or plastic casings that are an elegant addition to your kitchen appliances.. Dimension - 6.5 x 6.5 x 13 in.