The Twin Needles are two needles that are mounted on one shaft used to create two rows of stitches simultaneously.
They can create rows of parallel stitching lines and can be used in almost any Janome machine with zigzag sewing capabilities.
Stretch Needles are used for elastic materials and highly elastic knitwear. Specially designed eye and scarf prevent skipped stitches. They are Medium ball point, special eye and scarf.