Siruba HSM-2221 Twin-Needle Holder21 built-in stitches Sewing Machine, with thread cutter, 2 extra spool pins at rear, and free-arm sewing Stitch pattern: 21 (such as zig-zag stitch, blind stitch, 4-step buttonhole stitch and zipper stitch allows you to do hemming, binding, overcastting, embroidery and more) Removable extension table for free-arm sewing available Speed: 720~780 stitch per minute Reverse pressure for stronger stitches Easy to sew with stitch width and length selector dials