General description The 60Pcs Diamond Drill Bit set features high-quality diamond-coated tips designed for precision drilling in various materials such as glass, ceramics, porcelain tiles, and more. With a nickel-plated coating, these bits offer rust and corrosion resistance, ensuring durability and a long service life. Technical specifications Aperture: 8mm Drilling depth: max 30mm Total length: about 50mm Bit holder diameter: about 5.5mm Number of revolutions: Max 800/min Quantity: 60 drill bits Installation To use the drill bits effectively, start drilling at a 45-degree angle and then align the hole shape at a 90-degree angle to complete the drilling process. The center guide holes and side holes assist in easily removing chips. Usage It is recommended to reduce drill speeds and apply low drill pressure while using these bits. Additionally, using water to cool down the drill will significantly extend the life of the drill bits. Other information Note: Light and different displays