A serger (also called an overlocker or overlock machine) is designed primarily to sew the edges of fabrics to prevent them from fraying. In addition to ensuring the edges of your material do not unravel, serging or overlocking also gives your fabric a professional finish and a durable seam. In stretchy fabrics, it gives a seam that will stretch and not break. This machine is in like new condition and was just serviced in May. It can be seen at our Songhees condo.