17 popular Sulky 12 Wt. Cotton Blendables thread on 300 yd. spools. Sulky Cotton Blendables Thread are the only multicolor threads that are a masterful blend of different colors within the same range of tone and intensity, with random, subtle color changes every 2-1/2 to 5 inches! This is a great package for the avid hand embroiderer, appliqué enthusiast, and hand quilter, ensuring you will always find your perfect blend.