4/3/2 Thread Capability for 16 Stitches 16 different stitches to sew seams, seam finishes, decorative seams and edges, rolled edges and more. Full Access Looper Threading Both the left and right front covers open to provide complete access to the looper area, making threading super easy. Integrated Seam Guide Adjustable guide to help you sew perfectly straight seams and edges. Differential Feed Perfectly even seams - no stretching or distortion on knits or puckering of finer fabrics. This feature can also be used for gathering. Safety Lockout Prevents the machine from sewing when the front cover is open. Pre-Threaded Already threaded right out of the box for an effortless start to overlock sewing.