XP Diamond Core Drill Bit 4" Dry Concrete Block Diamond Turbo Segment 5/8

4" diameter 8 mm diamond segments for Extended bit life 3.5 mm segment width 9 drill depth Overall Bit Length: 10 1/2" Vented barrel for cooling and material removal Suitable for drilling on a full range of materials from brick to block. Not for use in reinforced concrete Uses standard 5/8 - 11 thread adapter ISO 9002 Quality Certified