10 Cones with 3000 yds ea. of Polyester Threads for Sewing Quilting Serger BLACK Color From Threadnanny 10 large Cones of High Quality BLACK Sewing Quilting Serger Threads High Quality 2-PLY 100% SPUN Polyester 40wt. Each Spool is 3000 Meters (3300 Yards) Good for any home or Commercial Machine Best Quality - Will not Break at High Speed Machines