METAL FRAME: The Brother 1034D is a durable serger made with a high-quality metal frame and interior components. Underlooper Threader-Yes HIGH PERFORMANCE: A reliable 3 or 4 thread serger that can handle multiple layers of denim and other heavy materials 1,300 STITCHES PER MINUTE: Get more serging done in less time by sewing up to 1,300 stitches per minute. Control speed with the included foot pedal EASY TO THREAD: Easy-to-use, color-coded upper thread guide and lower looper threading system along with included instruction manual INCLUDED ACCESSORY FEET: The 1034D comes with 3 snap on feet including standard, gathering and blind stitch This product is intended for sale only in the US at 120 volts, and any other use or sale voids the warranty.