Husqvarna Diamond Core Drill Bit 542788533 3 4 Inch B1420 Elite (24 Inch Tube 5 8 11 Thread Wet Cutting Reinforced Concrete Flint Masonry) Forstner Bits Jobsite Proven D Handle Architecture: Ergonomic inline Jobsite Proven D Handle Architecture: Ergonomic inline D handle provides superior grip alignment and downward thrust leverage for floor and wall drilling passes 1 mm) Cutting Tip Profile Flat Bottom Material Clearing Tip Number of Carbide Cutters 2 Flute Carbide Cutters Body Protective Coating Red Perma SHIELD® Non Stick Fluoropolymer Cutter Metallurgy Material TiCo™ Hi Density Micrograin Carbide Tipped Primary Machine Compatibility CNC Routers 000 inches (2 Feet 609 6 mm) Spindle Thread Connection 5 8" 11 Threaded Female Hub Cutting Segment Style Continuous Crown Ring Segment Coolant Requirement Wet Cutting Only (Continuous Water Supply Required) Recommended Motor Power Rating 2 HP to 5 HP Core Drill Motors Machine Mounting Compatibility Rig Mounted Drill Stands and Handheld Core Motors Primary Material Cutting Target Flint