Designed for precision, safety, and speed when core drilling by hand. The B77 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 B77 delivers bulls-eye accuracy, faster setup, and safer operation on concrete walls, floors, manholes, pipes and more. Key Features: Core Bit Fit: Designed for 77mm Core Drill Bits Material: Polystone 7000 SH UHMWPE Lifespan: 80–100 holes (user and substrate-dependent) Compatibility: Compatible with Husqvarna, Hilti, Tusk, Full Boar, Milwaukee, Black Rock Versatile Use: Suitable for concrete walls, concrete floors, concrete manholes, concrete pipes, etc. Product Details (for shipping only): Block Weight: 253g Block Dimensions: 68.5mm x 75mm (Note: this refers to block size, not the hole size this block is designed for) Colour: Black
