Prism by Pieceful Quilter Thread Kit 12wt 10 Small (54 yard) Spools Aurifil 12 wt. Prism collection from Aurifil Selection by Pieceful Quilter, Michele Scott Thread Kit includes 10 small 12 weight spools, 54 yards (50 meters) each 100% Cotton; premium quilt shop quality thread Packaged in a convenient case by the manufacturer