B254 – Fits 254mm Core Bit – Standard Block (Metric) Style:With Bolt the AB4 ½” is trusted

the AB4 ½” is trusted by professional drillers

secure the Core Drill Block with one of the included screw bolts using the 17mm socket

the B125 delivers bulls-eye accuracy

The B132 Block is built to help you hit the mark every time – no expensive rigs

B254 – Fits 254mm Core Bit – Standard Block (Metric) Style:With Bolt the AB4 ½” is trustedDesigned for precision, safety, and speed when core drilling by hand. The B254 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 B254 delivers bulls eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for