Featured on Making The Cut, The S0230 serger overlock machine saves time by sewing a seam and seam finish at the same time, while trimming away the excess seam allowance You can use 2 threads, 3 threads or 4 threads for a variety of stitch combinations and a Color-Coded Threading System Differential Feed allows you to sew super stretchy fabrics without the wavy distortion and sheers without puckering The Built-in Free Arm makes it possible to sew around small sleeves and cuffs – great for children’s clothing and more Finish your projects quicker with a fast stitching speed. Sews 1,300 Stitches Per Min.