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VEVOR Diamond Core Drill, 4"/101mm Diameter Core Drill Bit, 9.5"/241mm Concrete Core Drill Bit, 5/8"-11 Thread Core Bit, Dry/Wet Drill Core Bits w/a Blade, Diamond Wet Coring Bit for Concrete Brick -
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EDiamondTools 4-1/4 in. Dry Diamond Core Drill Bit for Brick and Block, 9.5 in. Drilling Depth, 1/2 in. Chuck Pilot Bit Adapter DBP0414A5ADJ11 - The Home Depot
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VEVOR Dry Core Drill Bit, 4.25"/108 mm Diameter 5/8"-11 Shank Arbor with a Pilot Bit & 4.5" Blade, 9.5"/241.3mm Depth Diamond Coring Bore Tool, Masonry Hole Saw Bits for Hard Concrete Brick
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