B152 – Fits 152mm Core Bit – Standard Block (Metric) Style:With Bolt • Sand and lime stone

• Sand and lime stone

The B45 Block is built to help you hit the mark every time – no expensive rigs

Block Dimensions: 51mm x 75mm (Note: this refers to block size

Core Bit Fit: Designed for 117mm Core Drill Bits

Block Dimensions: 137

B152 – Fits 152mm Core Bit – Standard Block (Metric) Style:With Bolt • Sand and lime stoneDesigned for precision, safety, and speed when core drilling by hand. The B152 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 B152 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for