Sunguard Polyester Bobbins B138 M Style Black

Suitable for marine and outdoor upholstery, awnings, boat covers, tarps, automotive interiors, transportation products, and more.

Recommended Needle Size: 24 (US) / 180 (Metric)

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Technical Specifications

• Bonded Polyester Thread
• M Style Bobbins (1 1/64"; approximately the size of a quarter)
• Size B138
• Tex Size T135
• Government Size FF
• Anti-Wick Finish to combat seam leakage
• UV Resistant
• Mold & Mildew Resistant
• 3 Plies
• Z (Left) Twist
• 21lb Tensile Strength
• 14-17% Elongation
• Retains 15% more thread strength than other Polyester Threads
• Bobbins feature Cardboard Sides.
• 24 yards of thread per bobbin.
• 72 bobbins per box.
• Sold by the box.