can't read?
Molybdenum is a chemical element with symbol Mo and atomic number 42. Molybdenum does not occur naturally as a free metal on Earth; it is found only in various oxidation states in minerals.
M 6309 (OTTO) Molybdenum sputtering target, diam. x thickness 25.4 mm x 1 mm, 99.9% - used in electronic and semiconductor application.