Core Drill Bit 4" | Diamond Dry Coring Bit with Pilot Bit | For Hard Concrete Drilling GroFan_5 and rinse clean

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Core Drill Bit 4" | Diamond Dry Coring Bit with Pilot Bit | For Hard Concrete Drilling GroFan_5 and rinse cleanProduct Features Efficient & Smooth Drilling This diamond core drill comprises premium aluminum alloy components, and high quality diamond grits ensure a longer coring life. Diameter: 4 in 101. 6 mm, Drilling Depth: 9. 5" 241. 3 mm. A pilot bit and an extra 4. 5" 114. 3 mm blade is included to increase your efficiency. Engineered for Exact Fitting With a 5 8" 11 universal thread, this core drill bit allows easy and rapid assembling to a standard fixed