Both solids and multi's are perfect for all your quilting, sewing and long arm cotton needs. The mercerization of all Mettler cottons creates that beautiful silk-like sheen, high breaking resistance, color fastness and optimal elongation. Use Mettler's silk finish 50wt cotton with confidence to create your heirloom quilts, custom garments and creative projects. Manufacturer recommends needle size 80-90. Each spool is 164 yards.