... need kerosene oil. SZ-GST super permeability glass cutting blade, adopts the special&precision processing technique to ... 300 on the blade. To cut glass, the cutting quality&depth can be well improved, do not ... before breaking.The SZ-GST is mainly used for cutting touch screen,LCD,etc.The main feature ... crack again before breaking.4. Smooth: on the cutting mark, there is no small glass fragments, no ...