prewound bobbin thread

Material 100% Cotton,100% Polyester,Polyester / metallic
Embroidery
Yarn Type Spun
Prewound bobbin features:
1.Beautiful pattern with the same tension.
2.Without metal bobbin.
3.Use 3.1.5 to 2.5 times longer than the previous bottom thread of embroidery machine.
Advantages:
1).Rational design, smoothly.
2).Less needle broken, less needle cost.
3).Less machine stopping time, higher efficiency.

prewound bobbin thread