Description Overview KB double serging machine Serging mode: single border, dual border Specifications Overlocking width: 6.5 mm Available fabric width: 150 mm to 500 mm (adjustable) Max material thickness: less than 20 mm (middle density) Power: 380 V, 3 phases, 50 Hz Sewing speed: 15 to 30 meters per minute (adjustable) Needle pitch: 2 to 7 mm (freely adjustable) Sewing head brand: Juki Sewing head model: 6784 Sewing head rpm: greater than or equal to 3000 rpm