Vintage Singer 66 / 99 sewing machine feed dog cover plate for darning, embroidery & other free motion sewing. Features the blackside finish. It is also compatible with the 185 & 192K / Spartan - It clips onto the throat plate and is held securely in place by the slide plate, it only takes seconds to put in place. Very nice vintage condition, clean & rust free. Genuine Simanco accessory, part #32622