HK M3-3D/UT, 1 needle, 3 thread
HK M3-4D/UT, 2 needle, 4 thread
HK M3-5D/UT, 2 needle, 5 thread

Option:
Electronic auto-trimmer
Pneumatic auto-trimmer

Excellent direct drive system & easy-operated control box.

Pneumatic presser-foot lifting.

Suction trimming. Electric eye sensed waste vacuuming system:

1.Suction system only running when trimming reduce the noise of air suction effectively.

2.Save air compressor sloading up to 50%.