This is the vintage original presser bar releasing lever (rocker arm) and spring for the Singer Featherweight. The purpose of this part is to release the tension discs while the presser foot is in the raised position. The screw is included (51354).
{NOTE: The most common part for most Featherweights will be number 45764. However part number 45909 is the one most often on 221K, 221J and 222K Featherweights. Be sure to compare part numbers as they are slightly different and select what part number you have in the drop down menu before adding to your cart.}