The Silver 720D will sew with speeds up to 1300 stitches per minute. It features electronic control, electronic saftey cut out and an easy Upper Knife release. The Silver 720D is a free-arm overlocker. Previously available only on our sewing machines, the free-arm allows you to overlock in tight places like cuffs and collars with ease. For instance, to attach a sleeve to a garment, you simply slip the turned out sleeve and arm over the free-arm and overlock. The Silver 720D has 3 or 4 thread stitching capabilities. It’s equipped with a differential feed (adjustable from .05 to 2.25) and an adjustable cutting width. This provides increased control for handling most types of fabrics and is essential for creative serger techniques. Threading is simplified by color-coded thread guides and a self-threading lower looper. Simply lay the thread into the guide, flip a switch, and the lower looper is threaded. The guide is automatically returned to its normal position when you turn the balance wheel. And when you lift the presser foot for rethreading, the thread tensions are automatically released at the touch of a button you can draw the thread smoothly. You can also switch quickly to rolled hemming without changing the needle plate. The Silver 720D with its free-arm and other advanced features, is the easiest way to get fast, professional results.