B172 – Fits 172mm Core Bit – Standard Block (Metric) Accessories The B4 ¼” Block is

The B4 ¼” Block is built to help you hit the mark every time – no expensive rigs

the B76 delivers bulls-eye accuracy

The B3 ¾” Block is built to help you hit the mark every time – no expensive rigs

Block Dimensions: 132mm x 75mm (Note: this refers to block size

Each pack includes:

B172 – Fits 172mm Core Bit – Standard Block (Metric) Accessories The B4 ¼” Block isDesigned for precision, safety, and speed when core drilling by hand. The B172 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 B172 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for