... -20,30,50,60,90,125,150-H-semi-automatic electrical control two-rollers annular ring ... LGE-20,30,50,60,90,125,150-H-semi-automatic electrical control two-rollers annular ring ... . When the hole is largest, the turning feeding system will feed and rotate the tube again. Technical Parameters ... LGE-20,30,50,60,90,125,150-H-semi-automatic electrical control two-rollers annular ring ...