Single-fluted design eliminates skidding and makes for easier resharpening;Laser-etched hole size are easy-to-read and permanent;Anti-skid tip eliminates the need for center punching or pilot hole drilling for most sizes;Drill multiple-size holes in thin sections of metal, plastic and wood using a single bit;Works in most metals (steel, brass, aluminum, copper), as well as plastic and wood;Single flute cutter for a true round hole every time;Works in most metals, plastic and wood;Non-walking split point tip design;Permanent, easy-to-read laser-etched hole size;Tri-lobe shank for firm grip in drill chuck