He is the patron saint of hunters, mathematicians, opticians, and metalworkers. 3" X 5" vinyl folder with removable oxidized medal. 1.125" Genuine Pewter Saint Medal on a Stainless Steel Chain. Silver Embossed Pamphlet with Patron Saint Information and Prayer Included. Biography/History of the Saint and gives the Patron's attributes, Feast Day and Appropriate Prayer. (3.25"x 5.5")