These are vintage original bed extension screws and they fit all Singer Featherweight 221 and 222 models. The early Featherweights as well as the tan Featherweight had chrome screws, but the later black Featherweights had black screws. These screws come as a set of two and each one will include an original washer to go with it. If you have any questions regarding this product be sure to contact us and we will be happy to help you.