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EDiamondTools 4 in. Diamond Wet Core Bit for Concrete and Masonry, 14 in. Drilling Depth, 1-1/4"-7 Arbor WBP0400A4 - The Home Depot
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VEVOR Diamond Core Drill, 4"/101mm Diameter Core Drill Bit, 14"/355mm 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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Amazon.com: BOSCH HC8555 4 In. x 22 In. SDS-Max Rotary Hammer Core Bit Ideal for Applications in Masonry, Brick, Block, Concrete : Tools & Home Improvement
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