Schmetz Machine Needle Twin Denim 4mm Size 100 1pc
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Two needles mounted on one shaft, used to create two rows of stitching at the same time. Use two spools of thread and pass each thread on a different side of the tension discs and thread one thread one into each needle. Only one bobbin thread is used and the stitches create a double web of stitches on the back. Must use with a zigzag stitch plate.