Magna-Glide Delights are the original high-yield magnetic-core prewound bobbins from Fil-Tec. The patented magnetic core delivers consistent thread tension from a full bobbin down to the last yard — no mid-project tension adjustments, no backlash, no over-spin, and no need for backlash springs.

Each jar contains 10 Style M bobbins wound with smooth 40wt filament polyester. The larger Style M size holds nearly twice the thread of a Class L bobbin, making it the go-to choice for longarm quilting machines and other machines that accept M-style bobbins.

• Fiber: Filament polyester
• Thread weight: 40wt, 2 ply
• Bobbin style: Style M, magnetic core
• Bobbins per jar: 10
• Length per bobbin: 132 yards
• Recommended needle: 65/9 (domestic), 4.0 (longarm)
• Use: Bobbin thread for longarm quilting, embroidery, and general sewing

Magnetic-core bobbins keep delivery even as the bobbin empties, which is why longarm quilters rely on Magna-Glide for stitch consistency across large projects.