Microquilter thread is a 100 weight thread made by Superior Threads. This thread works beautifully for quilting in the ditch, invisible machine applique, microstippling, and very fine, dense quilting. Micro quilter is very forgiving because of its fineness but is also very strong. Made of 100% polyester, it compares in weight to silk or very fine polyester monofilament but is easier to use. We recommend using it in either the top and/or the bobbin. But you can also use a 60 weight thread such as Bottom Line in the bobbin with no issues. We carry Microquilter thread in all 30 colors available on 3,000 yard cones. Save a little money and grab one of our hand curated thread bundles of MicroQuilter machine quilting thread!