Set of 10 Assorted Spools of Polyester Sewing Thread 400 Yards Each Material: Polyester. Package included:10 x Sewing/Quilting Thread Spools. Each Spool size is 400 Yards. 10 small sewing thread. Good for any home or Commercial Machine. Great for Pillow covers, garments stitching, bed sheets & linings and other stitching art projects.