You are buying a SINGER accessory for a

                    SLANT SHANK Sewing Machines

      SPECIAL PURPOSE FOOT or Satin Stitch Foot         

                       #163483 or #183483 Made in USA  (7mm opening, double hole cording)

This foot is used for satin stitching, buttonholes, raised or cording buttonholes, appliqué & monograms.

Information Guide included

Will fit all Singer Slant Shank - Zigzag Sewing Machines

All metal - Excellent Condition

Questions welcome.... 

NOTE:  I have other listings of this identical foot to give you more choice.