B3 ¾” – Fits 3 ¾ Inch Core Bit – Standard Block (Imperial) B Block Core Bit Fit: Designed for

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B3 ¾” – Fits 3 ¾ Inch Core Bit – Standard Block (Imperial) B Block Core Bit Fit: Designed forDesigned for precision, safety, and speed when core drilling by hand. The B3 Block is built to help you hit the mark every time no expensive rigs, no risky setups. Just accurate, safe, and efficient drilling. Trusted by core drillers, plumbers, sparkies, drain layers, and even DIYers, the B3 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for 3