Aurifil’s 100% Cotton 12wt/2ply thread on a small spool - 54 Yards/50 Metres 12 Wt is a thick sewing thread, perfect for applications where you need a strong and more visible thread. Uses:Hand Appliqué, Hand Embroidery, Hand Quilting, Topstitch, Cross Stitch, Embellishment and Lace, Machine Appliqué, Blanket Stitch, Buttonhole Stitch, Machine Embroidery, Machine Art Quilting, Sashiko, Redwork, Lower Looper Serging, Longarm Quilting Needle Recommendations: 100/16 or 90/14 Topstitch Needle (40wt in the bobbin) 4.5 Longarm Needle (28wt in the bobbin) Tips: When using 12wt thread by machine, we recommend using a much thinner thread in the bobbin, like Aurifil 40wt. When using in a Longarm machine, quilt slowly, using a longer stitch and silicone conditioner where necessary.Wash on a cool wash, warm iron, can be tumble dried on low heat.