I use pre-wound NEB bobbins for my embroidery projects and then use the empty NEB bobbins for when I need just a little of one color for a project. Saves my good machine bobbins for larger projects. Plus I can use the NEB bobbins in both my Viking D1 and my Babylock Ellegante machines. Probably could use them in my new to me Brother XR3140 if I get the little insert pin that goes into the bobbin case to bring the bobbin up a little. Haven't tried the pre-wounds for the quilt machine as my bobbin winder works get for me plus winds my "L" bobbins too..........excluding the green Viking bobbins.