Wet drilling suitable for: Concrete, reinforced concrete (up to 12 mm reinforcement), washed concrete, old concrete, fireclay, masonry, brick, clinker brick, sand-lime brick, general. Building materials. Dry drilling suitable for: Masonry, brick, sand-lime brick, screed, concrete. Please note: Diamond core bits and drill bits are generally always to be used without impact. Never set your drill to impact drilling mode!