4-1/4" Wet Concrete Core Drill Bit, 1-1/4"-7 Threaded Wet Diamond Core Bit, 14" Drilling Depth Laser Welded Wet Core Bit with Rebar for Reinforced Concrete Hard Brick Masonry. WIDE APPLICATION: This professional concrete core drill bit is suitable for effective drilling in materials such as: reinforced concrete, masonry, poroton, clay pipe, yton, brick, concrete and much more.
eBay