The Jack F4 is a standard industrial straight stitch machine with a direct drive motor. It has a maximum sewing speed of 5,000 stitches per minute; however, this can be adjusted on the speed control panel. This is the perfect machine if you need a no-fuss, basic industrial machine for lightweight to medium-heavy fabrics.
 
Features:
- Direct Drive, Silent Motor
- Power-Saving Lockstitch Machine 
- Straight stitch
- Reverse lever
- Automatic dormancy function
- Suitable for light to medium-heavy fabrics
- 5 mm stitch length
- 5 mm presser foot lift (by hand)
- 13 mm presser foot lift (by knee)
- DB X 1 Needle code
Thread Cutter Upgrade:
- LED light
- Safety switch
- High voltage protection