... Japan JUKI-6900 high speed straight needle sewing head, 2, Double Straight needle design, 3, With auto oiling system ensuring sufficient ... oil filter, easy for replacement & cleaning. 4, Push-button type stitch length regulator, no need for changing the cam,5 ... thread & needle breakage as well as thread leaping. 7, Adopt double-needle-five-thread synchronous structure and strong cloth-feeding system ...