Description Overview Extra heavy duty mattress overlock machine specially designed for foamed cotton mattress Machine can add overlock sewing and safety thread locking at one time Specifications Speed: 2500 rpm Height of presser foot: 20 mm Needle gauge: 15 mm (10 mm and 20 mm are available in other models) Overhand thickness: 35 to 70 mm Stitch length: 2 to 10 mm Needle / thread (dpx5 23#): 2 needle 4 thread Atmospheric pressure: 0.8 mpa Power: single-phase 220 V, 50 Hz Rating power: 750 W