Your choice of one vintage Singer sewing machine flat fashion disc / decorative stitch cam. Please refer to the picture of the stitch chart (31 is not shown, it is a scallop) & see the option menu for the available cams. Compatible with the following models: 238, 240, 248, 258, 306, 316, 319, 320, 328, 338, 348, 360, 418, 477, 478, 514, 518, 538, 818, 838, 1730 and 1800.