Klein 59029 High Speed Steel Step-Drill Bit — Metric 5mm to 29mm USA

Single-fluted design eliminates skidding and makes for easier resharpening - Laser-etched hole sizes 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 in plastic and wood

Easy to keep sharp. No center punching or pilot hole drilling required on most sizes. Saves time in electrical work. Does the work of many drill-bit sizes. Diameter markings permanently laser-etched in flute areas. For multiple-size holes in thin sections of materials using a single bit. Designed for use in portable electric drills and drill presses