Laser Welded Diamond Core Bits Designed to Drill Precast Concrete & Reinforced Concrete with High PSI Featuring High Diamond Concentration V Segments Precision Alignment for Precast Cable and Pandeck Drilling Wet Drilling Diamond Core Bits - 1-1/4"-7 Thread - 14" Length Global Diamond Pros diamond core bits are available in a wide variety of sizes with a standard 14 inch long barrel. These precast bits have been tested on concrete and concrete with rebar; concluding with a 35% longer lifespan compared to other diamond precast core bits. Engineered for maximum performance and efficiency to complete your task smoother. Standard 14” long barrel Drilling method Wet only PRECAST Concrete Pan deck Concrete Plank Concrete High PSI Concrete Engineered for fast and smooth drilling Tested for a total of 35% longer lifespan Fits all standard core drill machines 1-1/4"-7 Thread Equipment use of core drills and core drill rigs High diamond concentration BARREL - 14" Length High Resistance Steel Core. Thread: 1-1/4"-7, 12 mm Segment Height SPECIALIZED - For Wet Only Use. Available from 2” to 6" Diameter. EQUIPMENT - Hand Held or Rig Mount Core Drill Motor - Hilti, Weka, Shibuya, Husqvarna, Dr. Schulze & more!