Sulky 12wt cotton for a Bolder look. Spool contains 330yds. Great for many Machine and Handneedlework. If you are familiar with our quilts, you know that this is one of our favorite ways to finish off the quilting on our quilt projects. Our favorite color is 713-1070. For best machine stitch results we use a size 18 or 20 needle when we do the quilting.