Features of the Juki MO-114D Serger Overlock Machine 3, or 4 Thread Stitching Lay in Tension System Universal throat plate allows you to go from standard serge to roll hem with the flip of a switch Adjustable cutting width Left needle 5-7mm Right needle 3-5mm Rolled hem 1.8-2.2mm Adjustable stitch length 1-4mm Differential Feed 0.7-2.0 Ratio Presser foot lift 7.5mm Adjustble presser foot pressure Sewing Light