Cutex Sewing DOUBLE FOLD CLEAN FINISH HEMMING FOLDER ATTACHMENT FOR SEWING MACHINES HEMMER 1/2" Double Fold Clean Finish Swing-Away Hemmer Attachment for Industrial Sewing Machines. This attachment is used to hem the side of the material neatly as shown in the diagram. This hemmer is for hemming all kinds of wearing apparel; also curtains and draperies. This attachment can be swinged away when not needed and does not have to be removed from the machine. This hemmer is available in following hem sizes. Please select your size depending on how much you want to hem. 1/2"