A series of 2 or 3-needle interlocks (4- or 5-thread) with a flat-bed. Basic model of interlock stitch machine with double side cover-stitching. It is available for various sewing by optional devices (f.ex. binder). Such as plain seaming and bottom hemming for underwear, sportswear.
Automatic version with electronically controlled thread trimmer, needle positioning and presser foot lift.