Laboratory Ball Mill Ball Rod 911MetallurgistLaboratory Ball Mill Ball Rod Here is a convertible laboratory ore grinding mill Use it as a Lab Ball Mill if you like over grinding or a Rod Mill if you prefer selective milling Sizes 8″ x 8″ to 8″ x 16″ ball and rod Extra Large Batch 12″ x 15″ 10 kilo ore load Mild steel construction Cantilever design