MAGNA-GLIDE CLASSIC M/JUMBO BOBBINS
Polyester Pre-wound Bobbins -Tex 12 (60 wt.)
Contains: White #10000, Black #11001, Cream #20001, Light Tan #24655, Light Grey #17543 and Lead Grey#1CG11
White and Black contains 100 bobbins per box. The remaining four colors are 72 bobbins per box.
Watch this to see how consistant the tension is throughout the use of the bobbin!