Wide Range of Applications --- Used for hollowing out glass, ceramic tiles, marble, stone, glass bottles and jars. Always use water as a coolant or lubricant in the drilling area to keep it cool and extend its service life. Ease of Use --- Diamond hole saws with clearance holes facilitate the entry of cooling water and the evacuation of chips, making the drilling process easier. The white zinc plating on the hole saw provides excellent corrosion resistance, thus extending the tool life. Electroplated Diamond --- It is durable and strong, providing precise drilling with less vibration and minimal chipping. The hole saws produce smooth cuts without chipping. The carbon steel body of the drill bit provides durability, strength and wear resistance.