Offering convenience and quality, these 60 weight, continuous filament, polyester, plastic-sided bobbins are virtually lint-free and are the perfect weight for most sewing, quilting and embroidery projects. Available in 4 colors in both type "A" and the very popular type "L" style. "L" style tubes have blue labels and contain 5 bobbins with 120 yards per bobbin. "A" style tubes have purple labels and contain 4 bobbins with 131 yards per bobbin.