This product is a set of 4 antique key blanks made of nickel silver, designed specifically for old Yale padlocks. The key blanks feature an ornate bow and were made in the USA. These original vintage pieces are unique and collectible, perfect for those interested in locks, keys, and hardware. The key blanks are catalogued as numbers 44D and 44-D, and are sure to be a valuable addition to any collection of antique locks or keys.