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4" Dry Diamond Core Drill Bits for Brick and Block with 1/2" Shank Pilot Bit Adapter, 9.5" Drilling Depth, 5/8"-11 Arbor - Amazon.com
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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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BLUEROCK DRY Type 1"-4" Set Diamond Coring Bit - Concrete Core Drill - PACKAGE DEAL - BLUEROCK Tools
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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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DEWALT 1/4-in 4-1/16-in Cobalt Alloy Steel Jobber Length Twist Drill Bit in the Twist Drill Bits department at Lowes.com
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