B1 ¾” – Fits 1 ¾ Inch Core Bit – Standard Block (Imperial) Accessories The B4 ½” Block is

The B4 ½” Block is built to help you hit the mark every time – no expensive rigs

the AB178 delivers consistent accuracy

Core Bit Fit: Designed for 5 Inch Core Drill Bits

Block Weight: 1082g

The B125 Block is built to help you hit the mark every time – no expensive rigs

B1 ¾” – Fits 1 ¾ Inch Core Bit – Standard Block (Imperial) Accessories The B4 ½” Block isDesigned for precision, safety, and speed when core drilling by hand. The B1 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 B1 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for 1