QUENX.
JACK C5C-4
JACK C5C-5
JACK E4S-4
JACK E4S-5
JACK JK-797TDI-4
JACK JK-797TDI-5
JITSUI JS-700D 2-Needle 4-Thread Overlock Sewing Machine
JITSUI JS-900D 4-Thread Overlock with Auto Trimmer & Lifter
PEGASUS EXT5114-03/333N-2X4/PT Cylinder Bed 4-Thread Overlock Sewing Machine