F867-MTR Has been Developed by FROMAC, One of the World's Leading Sewing Machine Modification Companies. The DURKOPP ADLER Sewing Head Has been Converted into a Zipper Sewing Unit, Either with a Looper (Chain Stitch) or with a Shuttle Hook (Lock Stitch). With This Machine, Two Parts of a Mattress Cover Are Sewn Together with a Zipper Simultaneously. Contact Us for Original Italian FROMAC Brand Machines.