51 gorgeous new Sulky 40 Wt. Rayon thread colors on 250 yd. spools. These are great colors to add to your Sulky Rayon collection. All 51 colors will inspire you to make something new. Sulky Rayon threads are made exclusively from Enka fibers, proven to be the highest quality rayon/viscose fibers in the world. You Save $46.29 off the total Retail Value price of $246.24, if purchased separately!