Singer sewing machine straight stitch throat / needle plate for the 500 & 800 series including the 502, 507, 509, 510, 513, 514, 518, 522, 527, 530, 533, 534, 538, 543, 560, 802, 807, 809, 813, 814, 818, 822, 824, 827, 833, 834, 838, 844, 860. Very nice vintage condition with minor signs of use. Singer part #171392.