TURBO and CROWN (on select sizes, see below) SEGMENTS ENGINEERED FOR PERFORMANCE - Diamond* Embedded Turbo and Crown Segements are Laser Welded onto Bits and are Designed For Reinforced Concrete Applications POWER TOOL COMPATABILITY - Industry standard thread pattern 5/8"-11** On 1/2" - 7/8" Diameters and 1 1/4"-7 on 1" Diameter And Larger Bits. For Fitment On DEWALT, Husqvarna, Milwaukee, WEKA & select Hilti (excluding Hilti "BI") core drills. Not compatible with Hilti "BI" connection drills.*** LASER ETCHED PRODUCT INFORMATION - For Easy Identification When In The Field: No Tape Measure Needed! Model Number Included For Easy Reordering DRILL ACCURATELY Recessed Grooves Milled Into Body Of The Bit