Hardened steel hammer masonry drill bits for general purpose applications. Hardened steel body for extra strength and reduced breakage. The flute spiral aids consistent drilling speed and efficient debris removal. Tungsten carbide tipped for longer life. Suitable for Masonry, concrete and stone. Sizes contained 5.5x110, 6.0x110, 7.0x160, 8.0x160, 10.0x160mm