1. Automatic needle position,automatic trimming,and pneumatic presser foot lifting;
This machine is designed with large vertical rotating hook for thread loop catching and  sl iding bars for thread up-taking.

2. Big hook, thread take-up lever, arm shaft and hook shaft, pump lubrication and compound feeding by needle bar, presser foot and feed dog provides this series with super proformance for sewing heavy materials.

3. The safe clutch prevents the hook from damage by overduty operation.

4. It is especially suitable in sewing car seat cushions, safety belts, safety air bags, parachutes, etc.