B87 – Fits 87mm Core Bit – Standard Block (Metric) Style:With Bolt the B250 delivers bulls-eye accuracy

the B250 delivers bulls-eye accuracy

Core Bit Fit: Designed for 140mm Core Drill Bits

Core Bit Fit: Designed for 78mm Core Drill Bits

Whether you're drilling a single penetration or tackling multiple core holes on site

The B9 ¼” Block is built to help you hit the mark every time – no expensive rigs

B87 – Fits 87mm Core Bit – Standard Block (Metric) Style:With Bolt the B250 delivers bulls-eye accuracyDesigned for precision, safety, and speed when core drilling by hand. The B87 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 B87 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for