... for sewing zipper, darning, buttonholing,buttonholing and sewing buttonSewing function: flat seam, blind sewing, zig-zag sewing, buttonholing, sewing button, sewing zipper ... , hemmed, overlock and embroidery.Specification Needle: 11#--18#Straight ... .0Weight: G/W 8.6kgs, N/W 7.8kgs Zig-zag Sewing machine ROSA