High Speed Needle Feed Lockstitch Sewing Machine ( LARGE HOOK): SS5903DB-4H (This is 4 Automatics sewing machine, and it is for thick fabric ) 1.Needle Feed motion permits more stable feeding and can prevent shifting in layers; 2. This style is designed with the electronic servo motor and control system based on automatic codes such as auto thread trimming, auto needle positioning and auto footlifting. It is more helpful when it is in factory; The Difference between big hook and small hook.
