Breakthrough in twist drill technology the revolutionary Viper Bit. Developed specifically for the semi-industrial trades person and the home handy person. For machine and hand held drilling in a wide range of ferrous and non-ferrous materials such as steel, aluminium, brass, wood and plastics. 2 Times faster, out-performing conventional drill bits. 118° Split point is self-centering, minimising wandering when starting and requires less power when drilling. Reduced shank on larger sizes suits 10mm power drill chucks. 6.5mm Diameter.