Multifunctional Marble and Glass Drilling Drill Bit

1. Made of high-quality diamond abrasive electroplating, high-temperature quenching, high hardness, sharp and durable
2. Scientific chip removal design, overall forging of the drill body, making the drill body more stable
3. Internal wax sealing treatment, cutting cooling can be dry-drilled, and use longer
4. The drill tail adopts a round design, with a wide range of uses, suitable for hand drills, angle grinders, etc.