6000 yards spool of 100% polyester thread, for serger, over lock or any other sewing machine with single needle. Med/strong duty thread. Serger thread is most commonly used to serge seams on clothing. Serging with serger thread can finish a seam sewn. Features. 6000 Yards 100 Percent Polyester Cone Serger Thread. 100% Polyester. 6000 Yards Cone. Use for Serger, Over lock, Merrow, Single needle etc.. Color fast Yarn Dye. The digital images we display have the most accurate color possible. However, due to differences in computer monitors, there may be variations in color between the actual product and your screenSpecifications. Color Yellow A047. Dimension 4 L x 2.5 H x 2.5 W. Weight 3.6 lbs