The width of pin-tucking can be changed to 2.5mm and 8mm by changing the nail blades
Specifications:
Model : DY-1412PTV
Needle : 12
No. of threads : 24
Needle gauge : 3/16
Needle bar stroke : 34
Stitch length : 7-17
Max. speed : 3500
Presser foot lift : 10mm