Magnetic Sides Size L (155) Prewound Bobbins Thread White / Black

Simthread's magnetic-sided bobbins have consistent tension throughout the life of the bobbin. 

These L-size bobbins are pre-wound and magnetic on one side and coated with paper on the other. The magnetic side helps prevent back lash and provides uniform tension. The continuous polyester filament helps reduce lint build-up in metal bobbin cases. Can be used as embroidery bottom thread or lacemaking thread

Specifications: 

• Magnetic-sided embroidery bobbins
• Continuous filament
• Pre-wound
• 100% Polyester thread 75D/2 (60wt)
• Style L
• White and Black available