This vintage Singer Buttonholer Attachment (Model 160506) is a collectible mid-century sewing tool designed for making perfect buttonholes on compatible Singer sewing machines. Made in the USA, this complete set includes the original black attachment, multiple metal templates, the adjustment knob, original green Singer storage case, and instruction booklet. Ideal for collectors, sewing enthusiasts, or those restoring vintage Singer equipment, this attachment combines craftsmanship and functionality from one of the most trusted names in sewing. Included: - Singer Buttonholer Attachment Model 160506 - 3 metal templates - Screw and plate accessories - Original green Singer case - Instruction booklet - Box of Singer templates