LA Linen Serger Cone Thread 100% Spool Polyester / 6000 Yards / Yellow. Direct from the Factory LA Linen ensures you are getting the highest quality item. To avoid getting second quality, damaged, or returned merchandise please make sure it is shipped to you by LA Linen. 6000 yards Serger Thread 100% Polyester Use for Serger, Over lock, Merrow, single needle etc.