The product is a vintage Pirastro string made of chromium steel, designed for a violin. This adjustable string is one in number and was manufactured in West Germany. Known for their high quality and durability, Pirastro strings are a popular choice among violinists for achieving a rich and vibrant sound. The use of chromium steel in this specific string adds a unique touch to the instrument's tone, making it a valuable addition for violinists looking to enhance their sound.