• Electroplated diamond core bits for glass, ceramic, natural stone, marble, terracotta, granite, porcelain...
• Made of type 3 diamonds.
• Made to be fast and have a long life.
• Use a high speed for optimum performance. Between 800rpm - 1400rpm. 1000rpm is recommended.
• Hold at 45 degree angle.

WARNINGS:

• Do not let the drill bit overheat. Water or other cooling liquid is necessary when working.
• Applying light pressure. Do not press too hard. Do not use it with a hammer action.
• Better wear gloves when working