B172 – Fits 172mm Core Bit – Standard Block (Metric) Accessories Core Bit Fit: Designed for

Core Bit Fit: Designed for 63mm Core Drill Bits

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

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

Compatibility: Compatible with Husqvarna

B172 – Fits 172mm Core Bit – Standard Block (Metric) Accessories Core Bit Fit: Designed forDesigned 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