thread 4 Pack Serger Thread Cones - Black Details thread 4 Pack Serger Thread Cones - Black Unavailable $20.00 $24.00 Default Title - $20.00 Select options 100% Polyester Excellent tensile strength 40/2 Thread 3000 Yards per cone Read more 100% Polyester Excellent tensile strength 40/2 Thread 3000 Yards per cone