The Gutermann 40wt Premium 100% polyester Serger Thread is available in Mini King spools, perfect for overlock and serger sewing. Use these high-quality threads for seamless and uninterrupted sewing on 3 and 4 thread overlock machines, as well as standard sewing machines. Each spool contains 1094 yards and is offered in a wide selection of colors. Simply choose your preferred color from the drop-down menu.