Zeta Steak Knife Solid H. St. Steel: Modern and Contemporary, Zeta is the result of 200 years of evolution from Broggi: A two-hundred- year tradition to understand what function really means. That is how the Zeta collection was born: modern, contemporary, able to interpret the present world. The symbol of a company that has comprehended that the secret of progress is the ability to evolve and reinvent their own story.