B87 – Fits 87mm Core Bit – Standard Block (Metric) Style:With Bolt Core Bit Fit: Designed for

Core Bit Fit: Designed for 140mm Core Drill Bits

Core Bit Fit: Designed for 78mm Core Drill Bits

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

Block Dimensions: 126mm x 75mm (Note: this refers to block size

the AB9 ¼” is trusted by professional drillers

B87 – Fits 87mm Core Bit – Standard Block (Metric) Style:With Bolt Core Bit Fit: Designed forDesigned 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