sizes of foils: 0,009 , 0,012 , 0,014 , 0,015 , 0,020 , 0,030 , 0,040 mm 1.Specifications Al2O3---------99.5%min. SiO2----------0.1%max. Fe2O3--------0.03%max. Na2O---------0.2%max. Loss on ignition------0.1%max. alpha-Al2O3----------95%min. 2.Packing:50kg/bag