Rm-500 portable blindstitch sewing machine desk model blind stitch machine is a special sewing machine to forms a single thread chain stitch with a single curved needle. The single-thread chain stitch hides itself so that you cannot see it from the outside which makes the clothes look more neat elegant and professionally made. High quality - pure copper motor more stable performance. The sewing machine is used for sewing all types of light to medium-weight materials including synthetics knits and woolens.