Magna-Glide Magnetic Core Style M Polyester Bobbins (100/box)
Magna-Glide bobbins are specifically designed for metal bobbin cases used in commercial embroidery applications. The magnetic core offers uniform tension control throughout the entire bobbin - no more throwing away partially-used bobbins due to erratic tensions!
Magna-Glide bobbins have no to very little lint buildup and no overspin or backlash concerns.
230 yards per bobbin, 100 bobbins per box