M1-NS series. Direct Drive, Overlock Safety Stitch Sewing Machine

M1-424NS. Direct Drive, 2-needle 4 thread Overlock Stitch Sewing Machine.

M1-556NS (5mm). Direct Drive, 2-needle 5 thread (5mm) Overlock Stitch Sewing Machine.

M1-534NS (3mm). Direct Drive, 2-needle 5 thread (3mm) Overlock Stitch Sewing Machine.

https://youtu.be/rWMb45kOoO4