... need kerosene oil. SZ-GST super permeability glass cutting blade, adopts the special&precision processing technique to ... on the blade. To cut glass, the cutting quality&depth can be well improved, do not ... .The SZ-GST is mainly used for cutting touch screen,LCD,etc.The main feature ... cutting mark, there is no small glass fragments, no powder5. Oil-free: do not need kerosene oil at all. glass cutting tool ...