Vintage Greist Rotary Buttonholer. Fits most straight stitch sewing machines. Made by Greist Manufacturing Company, founded by John M. Greist, an inventor employed by Singer to design sewing machine attachments. Made in New Haven, CT .Original box measures: 7 ½” x 3 ¼” x 2”Template sizes: 1 1/16”,13/16”,5/8”,5/16”.Comes with all original pieces, box and cast aluminum button hole sizing inserts. Sewing. To see it in action, go here: https://www.youtube.com/watch?v=q0l93Uq007M