Our 13078 Fil-Tec ClearGlide White "L" Embroidery Bobbins provide you with exact tension and come with a plastic flanged spool for your home sewing machines. Our polyester filament bobbin offers uniform tension and will give you up to 20-25% more stitches per bobbin compared to standard bobbins. Available in white, black, and select colors, these reliable bobbins work great with machine thread sensors and fit most drop-in home machines.