Description Lead Metal Rod, 6.35mm (0.25in) Dia, 99.999% (Metals Basis), 80mm For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) Gray Appearance (Form) Rod Assay (Metals Basis, as Pb) 99.999% ICP Analysis Confirms Pb component Total Metallic Impurities <0.001% CAS: 7439-92-1 FORMULA: Pb