Single Needle Cylinder Bed With Unison Feed Zigzag Sewing Machine DS-1500-4-6 Product Description Application 1) This machine adopts high-quality mini servo motor and patented horizontal and direct pneumatic type foot lifter, raise up the reliability, and lower down ratio of malfunction. 2) Patented hand wheel in front position, easy to operate. 3) Special design of the needle clamp, Easy to clean up, minimize the damage. Characteristic 1. This machine is with all-sealed lubrication system and automatic oil-supply. 2. It can conveniently change the stitch from 1.2-4mm by push buttons. 3. It can easily change the difference ratio from 1:0.8 to 1:2 by knob. 4. This machine is with security equipment of finger-guard, eye-guard etc, can be used safely.