2-Needle, 2/3/4-Thread Overlock with Easy Threader and Differential Feed. Automatic rolled hemming, Option to deactivate upper knife, Safety feature preventing operation when the presser foot is upper position or the cover is open. Thread trimming blade for easy thread cutting. Adjustable presser foot pressure. Cutting width adjusting dial. Adjustable Differential Feed Even with easily stretched fabrics such as knits and georgette, create beautifully sewn finishes by adjusting the differential feed. Adjustments can even be made while sewing. Beautiful Sharp Curves The distance between the needle and knife is 9.95 mm(conventional model:15.5 mm), allowing you to sew beautiful inside curves. Convenient Threader with the Easy Threader Using the new easy threader feature, easily thread the machine from the threading hole to the looper with the power of a strong whoosh of air sent from the electric motor. This amazing function dramatically alters upper and lower looper threading. LED Sewing Light The needle area is brightly illuminated. The long-life, energy-efficient and eco-friendly light will not heat up, even after a long period of use. Quiet Operation The sound reducing design minimizes the operating noise and the unit sews with less vibration. Upper Looper Converter Switch to 2-thread sewing simply by pushing the 2-/3-thread changeover attachment to the left, making this operation even easier. Wide Throat Area The height of the throat is 72.4 mm. Due to this height the usability of the work space improved infinitely.