Madeira's sideless magnetic core pre-wound machine embroidery bobbins are a reliable and efficient choice for embroidery enthusiasts. These magnetized, L-style bobbins offer strength and affordability. Each bobbin is carefully wound with 148 yards of premium polyester filament thread, which effectively reduces lint accumulation in the bobbin case. The magnetic core ensures the bobbin's stability within the metal bobbin case, maintaining optimal tension throughout its use. You'll notice reduced over-spin, friction, and wear and tear on the bobbin case. For best results, remove the anti-backlash spring from your bobbin case before using these bobbins. Each box conveniently contains 144 bobbins, available in white.

Specifications:

• Madeira Embroidery Bobbins
• Continuous Filament
• Sideless Magnetic Core
• Pre-wound
• Polyester Material
• Style: L
• Colour: White
• Yardage: 148 yards per bobbin
• Quantity: 144 bobbins per box