Electronic Speed Control Color-Coded Threading 3-Thread Overlock and 3-Thread Wrapped Overlock 4-Thread Mock Safety Stitch Flatlocking and Decorative Applications Blind Hem and Rolled Hem modes Adjustable Stitch Width (3.0 - 6.7 mm) Adjustable Stitch Length (2.0 - 4.0 mm) Movable Knife to Cut and Trim Up to 1300 Stitches Per Minute sewing speed Easy Tension Adjustment Stitch Length Control Dial Slant Needle Bar Adjustable Differential Feed Large Long Cloth Bed Free-Arm design Comes Pre-Threaded and Ready to Use Built-in Accessory Storage