Aurifil threads and Hoffman Fabrics have teamed up to offer this inspiring thread set sure to give your Challenge project the extra edge. Five colors of 50 wt thread have been specially selected to match 100 Years Hoffman Challenge featuring Bali Batiks. 100 Year Hoffman Challenge Bali Batiks thread set, 5 spools of 220 yds, 50 weight, 100% cotton Mako thread from Aurifil. Colors included: 2024, 3770, 2710, 6738, 2784.