• Best For: Crews drilling concrete with moderate to high steel reinforcement who need a 5 inch core hole and want MK Diamond part 157628 instead of another diameter in the MK Black Supreme line.
• Highlight: MK Black is a supreme-grade MK Diamond wet core bit engineered for exceptional footage and fast, aggressive drilling, and part 157628 delivers that at 5 inch diameter.
• Expert Note: The 5 inch diameter of 157628 sets the finished hole size, so confirm it before ordering because each MK Black Supreme size is sold under its own part number.
