Bronze round bar. Exact bronze type is not known. Various diameter and length, from 0.67″ to 1.47″ in diameter, 1.5″ to 3.8″ in length. I cannot give you just the largest one. I will include ~25% of weight on the larger size. The large rod is available by size at my other lists. This list is to sell by weight. The rod may come with sharp edge or disk in the middle, as pictured. It can be used for machining and casting.