DEWALT offers masonry drill bits use with cordless and corded percussion drills for drilling anchor, plastic plug, fixing or pipework clearance holes. Suitable for masonry, brick, stone, tiles and light concrete. Tungsten carbide welded and embedded in the tip ensures long lifetime. Half-round, milled helical flute guide and remove dust while drilling. Hardened Steel Body For Maximum Power Transfer And Fracture Resistance. SPECIFICATION: DIAMETER (MILLIMETER): 8mm DRILL BIT – WORKING LENGTH: 85mm LENGTH (MILLIMETER): 150mm APPLICATION: Block, Brick, Masonry