This vintage porcelain faucet knob is a charming addition to any farmhouse sink. With a white color and antique style, it adds a touch of character to your plumbing fixtures. The knob measures 2 1/2 inches on the side and 3 1/2 inches diagonally, making it a unique salvage find from the 1930s. The material is porcelain and the maker is unknown, making it a one-of-a-kind piece for collectors.