MYLOCK 644D Features:
The MyLock 644D is equipped with a unique differential feed device designed to prevent fabrics from puckering or stretching.
Lower Looper Pre-Tension Slider
Easy to adjust the looper thread tension for rolled hemming.
Changeable Thread Guide
You can change the thread tension setting depending on whether you’re doing 3, 4, or 2 thread serging.
Easy Lower Looper Threading
By rotating the thread guide, the lower looper thread guides will become accessible to make threading easier. The lower looper thread guide will return to its original position automatically by turning the handwheel.
Easy Upper Knife Release
Upper knife can be quickly and easily deactivated by the slide of a knob.