B5” – Fits 5 Inch Core Bit – Standard Block (Imperial) Style:With Bolt The B77 Block is built

The B77 Block is built to help you hit the mark every time – no expensive rigs

Core Bit Fit: Designed for 9 ½ Inch (241mm) Core Drill Bits

Conveniently packaged and ready to use

and 24mm drills - check our other listings

The AB8 ¼” Block makes angled drilling simple

B5” – Fits 5 Inch Core Bit – Standard Block (Imperial) Style:With Bolt The B77 Block is builtDesigned for precision, safety, and speed when core drilling by hand. The B5 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 B5 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for 5