The 3534DT is fast, easy to use, simple to thread and its free arm makes it a snap to sew sleeves, pant legs and other hard-to-reach places. With an included wide table, this serger is the perfect tool for your larger projects. Featuring a brightly lit LED workspace, you can see even the smallest details while working on your projects. Offering both a three- and four-thread configuration, this tool uses a differential feed ratio of 0.7 - 2.0 for better stitch quality on a wide variety of fabrics.