Coats and Clark Dual Duty Xp General Purpose Thread. This Thread Combines Advanced Technology From Coats With Nearly 200 Years Of Thread Making Experience. Product Is Polyester Wrapped Core Spun Construction Creating 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. Length: 250 Yards. Imported.