Every quilter needs this 12 Wt. Cotton Blendables Thread Quilter's Assortment! From neutral colors to vibrant blues and reds, these 10 spools were carefully chosen to suit your every day quilting needs. Sulky Cotton Blendables 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!