20 Spools (10 Black & 10 White) Sewing, Quilting, Serger Polyester Thread 40S/3 20 Spools Thread for Sewing, Quilting & Serger You get 10 Spools Black and 10 Spools White Quality 3-PLY 100% Spun Polyester 40wt weight 600 Yards Each Spool Will work great with any Sewing Machine, Quilting Machine & Serger