Cardboard-sided M style Bobbin with The Bottom Line thread. 60 wt. premium polyester. 1 dozen bobbins with 213yds per bobbin.
Cardboard-sided prewound bobbins may be used with the cardboard sides on or with the sides removed. Please experiment to determine what works best in your machine.
Below is a partial list of machines compatible with the M style bobbin:
A-1
Gammill
Handi Quilter
Homesteader
some Noltings
Tin Lizzie 18
Innova
Baby Lock Crown Jewel
Viking MQ 18X8
Pfaff GQ 18x8
Sweet Sixteen