Cyclone Marble Vacuum Brazed Core Bits are high-performance diamond drilling tools designed specifically for marble and other soft stone materials. Manufactured using vacuum-brazed diamond technology, these core bits deliver fast, clean drilling with minimal chipping, making them ideal for professional stone fabrication and installation work. The advanced vacuum-brazing process bonds diamonds to both the inside and outside of the core, allowing the bit to cut aggressively while maintaining long tool life. This design also improves drilling efficiency and ensures smoother hole edges. These core bits are versatile and can be used wet or dry, although wet drilling helps improve performance and extend tool life. Integrated cooling slots assist in heat dissipation and make it easier to remove the core if it becomes stuck during drilling. Designed with a 5/8″-11 threaded arbor, Cyclone Marble Vacuum Brazed Core Bits are compatible with common tools such as angle grinders, drills, and air polishers, making them suitable for both workshop fabrication and on-site installation. Key Features Vacuum-brazed diamonds on the inside and outside of the core Designed for clean, chip-free drilling in marble Wet or dry operation for flexible jobsite use Cooling slots for heat reduction and easy core removal 5/8″-11 thread fits most angle grinders, drills, and air polishers Fast cutting performance with smooth hole edges Suitable Materials Marble Porcelain Ultra-compact surfaces Soft stone materials Typical Specifications Available Sizes: 1-1/4″, 1-3/8″, 1-1/2″ Usable Length: approx. 2.75″ Max RPM: 4,000 Thread: 5/8″-11