VEVOR Core Drill Bit, 4" Wet/Dry Diamond Core Drill Bits for Brick and Block, Concrete Core Drill Bit with Pilot Bit Adapter and Saw Blade, 9.5" Drilling Depth, 5/8"-11 Inner Thread, Laser WeldingProduct Features Precision Engineered Design Our core drill bit is designed with universal 5 8" 11 thread, making it easy to quickly assemble onto standard core drilling equipment or handheld drill machines, providing versatility and convenience. Dual Use Wet and Dry Our diamond core drill bit is suitable for both dry and wet cutting conditions. Dry cutting provides faster speeds, while wet cutting reduces dust, catering to various project needs. It's