Original Singer Top Hat Cam # 4 Solid Scallop 172190 Fits Models 401, 403, 411, 431, 500, 503, 600 series

The cam worked well with my singer 403a. I had to dial the tension back to 1 and decrease the stitch length on my machine gradually once I was in the 'fine' section, or my machine would jam. But once I figured that out, the stitches were beautiful and the design was filled in nicely. The fancy stitches are not very big- less than a half-inch, but that is due to my sewing machine- not the stitch cam

Everything went well, item was as described and in good shape