WellieSTR 1 Spool 4380 yards 0.1mm Black Quilter`s invisible 100% nylon monofilament thread,Monofilament Thread, Invisible Transparent 100% Nylon,Quilting Thread~ free shipping Made from 100% Nylon Monofilament Thread black 0.1mm/(or 0.0039 inches) Or 80D thickness 4380 yard each spool Packed with net For both machine quilting and invisible machine applique