Coats-Dual Duty XP All Purpose Thread. This X-tra performance thread combines advanced technology. The unique manufacturing processes applied to the polyester-wrapped, core-spun construction creates a thread that provides enhanced seam appearance and makes sewing trouble-free. Smooth and strong, it sews perfectly on all machines-from vintage to today's most advanced. This package contains four 250 yard spools of article S910. Comes in a variety of colors.