Used Precision Japan Deluxe Dressmaker Arm Cover, Singer 15 clone parts. All made in Japan but can replace genuine Singer 15 parts. Includes thumb screw. Nice condition parts. Genuine Japanese Singer cloned parts.  Pulled off Japan Deluxe 30 Dressmaker sewing machine. Should work on most older Singer 15 machines and all Singer 15 clone machines made in Japan. Price includes shipping.