Main Features â¤Efficient drilling:Electroplated emery material, thick brazed emery, durable, sharper drilling, andhigher efficiency. It hasstrong toughness and excellent stability, which can extend its service life. â¤Wide application:It can be used to drill holes inglass, marble, ceramic tiles, ceramics, quartz stone, granite, or other materials. â¤Sharp and smooth cutting:High-quality performance can provide excellent accuracy and cutting strength, which is very suitable formaking clean and accurate holesto achieve smooth and precise surface treatment. â¤Installation method:Suitable forinstallation in hand-held electric drills, electric drilling machines and mobile belt magnetic drilling machines, etc, for fast cutting clean round holes. Specifications Note