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• Cutting edge shape for accurate and speedy large diameter opening.
• Highly efficient workability has been recognized, and many major local governments throughout the country have adopted it.
• Use "Drymond Core Drill" when using with rotation only. It can be drilled smoothly without fear of cracks or chips.
• For shanks, we recommend using shanks for SDS-max, Hitachi PRT-60, Bosch Spline, and Makita HR5000.
• Use an electric motor with a power consumption of 1200 W or more.