👉 Stuller is a type of metal used in the production of musical instruments. It is often referred to as the "fiddle" or "piano-string" of instruments like the violin, viola, cello, and other stringed instruments. Its appearance can vary depending on its shape and size, but it is typically made from steel, brass, or wood. Stuller is known for its lightness and durability, and it is often used in conjunction with other materials to create