This listing is for a set of 8 right handed antique vintage hickory shaft irons. All were made of patented non-corrosive Monel Metal. Monel Metal is composed of 67% nickel, 28% copper and 5% of other metals including iron, manganese, carbon and silicon. It was first developed by INCO (the International Nickel Company) in the early 1900's. It's non-corrosive nature made it well suited for use in golf heads in the teens and 20's.