B4” – Fits 4 Inch Core Bit – Standard Block (Imperial) AB Block Block Dimensions: 68

Block Dimensions: 68

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B4” – Fits 4 Inch Core Bit – Standard Block (Imperial) AB Block Block Dimensions: 68Designed for precision, safety, and speed when core drilling by hand. The B4 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 B4 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for 4