🔨 Drill Your Way to Perfection! Designed to endure dozens of holes, ensuring longevity. 5/8" thread fits perfectly on polishers and grinders. Use wet or dry for maximum flexibility. Optimal performance at 3000-6000 RPM for quick results. Drill through granite and concrete like a pro! Wet or dry use 5/8" thread compatibility 3000-6000 RPM speed The ToolocityCBKIT1 Monster Dry/Wet Diamond Granite/Concrete Core Drill Bits/Hole Saws set includes four high-performance bits designed for professional-grade drilling in granite and concrete. With a 5/8" thread for compatibility with polishers and grinders, these bits can be used wet or dry and are engineered to last through dozens of holes, operating efficiently at speeds between 3000-6000 RPM.