Eccentric vibrating mill Type ESM Ball Mill Usable volumn is 5 liter maximum Total grinding tube volume is 19 liters, grinding medea volume is 15 liters 235 mm ID x 450 mm L. Unit is batch design, suitable for wet and dry grinding, with a feed grain size up to 30mm Can accept rods, balls, and pebble grinding media, comes with CS Rods. The Exciter is side mounted creating ellitical and linear vibrations