JK927 double needle

JK927-PL double needle, with PL puller

JK927-PS double needle, with PS puller
JK928 three needle

Usage:
Suitable for medium & heavy materials with special feed-off-the-arm;
Both needle thread tension and bobbin thread tension have been decreased after reinvestigation of double chainstitching mechanism, thereby forming beautifully finished seams and preventing puckering;
Prevent stitch skipping when it runs at high speed, thereby producing higher grade products