Authorized reproduction of the users / instruction manual for Greist steel sewing machine attachments. It says set Rotary and is an older one. Griest is a generic manufacturer of sewing machine attachments. Many major and minor sewing machine manufacturers used Griest attachments instead of making their own and only some sewing machine manufacturers had their name impressed on the attachments. The ankle on your attachments could be different as different machines take differently shaped ankles to be attached to their presser foot bar. The attachments themselves work identically.