Threadart Two Huge Spools of Polyester Machine Embroidery Bobbin Thread - 60wt White or Black 2 Spool Twin Pack Each package contains two cones of 5000m bobbin thread for a total of 10000m thread. The perfect thread for winding your own bobbins. Made of 60wt filament polyester which is the standard for embroidery. 5000 meters per spool. Available in 5000m cones in black and white Black