Quantity: 20 plastic sided bobbins.
Description: The magnetic core of these pre-wound bobbins rotates the bobbin consistently throughout the entire length of the thread which results in uniform tension to the last stitch. Consistent tension throughout the bobbin increases stitches per bobbin. This equates to more time quilting and fewer bobbin changes. No backlash or overspin issues. (20) L-style prewound bobbins per jar/72 yards of thread per bobbin. 120x2 high tenacity trilobal polyester No. 40 Tex 27.