Stitch type : 301 ( lock stitch )
- Max. speed : Model A and B = 3000 s.p.m.
- Max. speed : Model C = 2000 s.p.m.
- Stitch length : standard 4.5 mm. max. 7 mm.
- Roller presser diameter : standard 35 mm. optional 25 mm.
- Roller presser clearance : 7 mm, with automatic presser foot lift 10 mm.