Makita Hammer Drill Bit Tungsten Carbide Tip 13mm Hex Shank Size: 16, 19, 20, 22 & 25.5 280mm Long T.C.T. (Tungsten Carbide Tipped) cutting head for masonry drilling 13mm hex shank for compatible hex-shank hammer drills Designed for hammer drilling applications Suitable for concrete, brick, block, stone, and masonry Durable construction for demanding construction and installation work Available in various diameters and lengths