B87 – Fits 87mm Core Bit – Standard Block (Metric) Style:With Bolt Block Dimensions: 50mm x 75mm

Block Dimensions: 50mm x 75mm (Note: this refers to block size

Core Bit Fit: Designed for 57mm Core Drill Bits

Core Bit Fit: Designed for 9 ¼ Inch Core Drill Bits

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

Core Bit Fit: Designed for 140mm Core Drill Bits

B87 – Fits 87mm Core Bit – Standard Block (Metric) Style:With Bolt Block Dimensions: 50mm x 75mmDesigned 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