Sutton Tools masonry drill bits are tradesman quality. Ideal for use in natural and artificial stone, masonry, brickwork & concrete. Tungsten Carbide percussion tip with semi-positive profile for 25% faster drilling than comparable product. The rolled double spiral flute provides greater dust extraction, for up to three times drill life. Sutton Tools presents a breakthrough in twist drill technology, the revolutionary Viper Bit. Drill bits with bite! The Viper Bit has been developed specifically for the Industrial trades person and the home handy person. For machine and hand held drilling in a wide range of ferrous & non-ferrous materials such as steel, aluminium, brass, wood & plastics. The Viper point design out-performs conventional HSS drill bits by delivering up to 2X faster drilling speeds. The 118° split point is self-centering, minimising wandering when starting and requires less thrust power when drilling. On larger diameters (>10mm), Viper bits, feature a reduced shank which permits usage with power drills fitted with a 10mm drill chuck.