Aurifil 50 wt cotton thread is the thread of choice at Valley Fabrics! We love it because it's 50 wt 2-Ply 100% long staple mercerized Egyptian cotton thread. Made in Milan, Italy, Aurifil is fabulous for machine quilting, machine embroidery, applique, and piecing. The 50 wt offers a beautiful subtle effect to allow the piecing to shine. Come into Valley Fabrics for a spool (or two.) Too busy sewing to make it into the store - buy it online!