Masonry crown drill fi 80 mm Crown drill equipped with six cutting inserts made of high-quality carbideos, brazed into the steel body with brass. 13 mm hexagonal shank terminated with M-16 thread Crown depth approx. 50 mm Centrally located replaceable pilot drill fi 8 mm Outer surface spirally milled for better drainage of material from the drilled hole Designed for professional work in setting electrical installation boxes in brick or concrete walls.
