Aurifil’s 100% Cotton 28wt/2ply thread comes wound on a grey spool. It is the second heaviest weight thread that Aurifil offers and is perfect for double strand cross stitch, blanket stitch, hand applique, hand piecing, hand quilting, bobbin and machine lace, machine quilting, longarm quilting, machine embroidery and lower looper serging. Needle recommendations: 90/14 Topstitch, Quilting or Denim needle (50wt in the bobbin); 4.0 Longarm Needle (40wt in the bobbin). Go a little slower than normal while using in a Longarm machine, especially when creating curves.