... enlarge and reduce diameter, such as pipe plug, automobile oil pipe, w Details:1. Main use: used ... pipe plug, automobile oilpipe, water pipes, refrigerator pipes, etc. 2) Features: the structure of machine tool reasonable, firmly, work ... steady, low noise,little vibrancy 3) Size: SG-1-40, SG-1-50, SG-1-80, etc.Packing: Wooden box Pipe end ... processing Machine