- Durable and long-lasting: The diamond-coated tips of the Raizi 3/4Inch Dry Vacuum Brazed Diamond Core Hole Saw Drilling Bits provide exceptional durability and long-lasting performance even when used for frequent, heavy-duty drilling applications
- Prone to overheating: Despite the built-in vacuum feature, the Raizi drilling bits can still overheat, which can damage the bits, leading to slower drilling speed and a shorter lifespan