Scarce Singer sewing machine feed dog cover plate for darning, embroidery and free motion sewing. For use on model 27, 127, 28 and 128. Please note that it appears that you may need to install this cover plate over top of the existing throat plate (using the original screw) as I found the feed dogs rubbed the underside otherwise - I tried it on both my early 28K and later model 127, both rubbed without the throat plate in place. Very nice vintage condition with typical signs of age. Genuine, original Simanco part #86080.