... accessory 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.SpecificationNeedle: 11#--18#Straight stitch: 3.6mmPresser lift height: 6mmSewing speed(rpm ... *34.5Weight: G/W 8.6kgs, N/W 7.8kgs Multi-function Sewing machine ROSA