Norseman's drill bits give you twice the life of a standard drill bit. Enlarge existing holes or drill through sheet metal, hard steel, acrylics and brass. Self-centering and 3-flats on shank.Specifications- Brand: Viking Norseman Drill- Finish: Black and Gold OxideFeatures- Sizes: 1/16 in., 3/32 in., 1/8 in., 5/32 in. Norseman NOR-22873 - 1/16 in. - 1/2 in. Black and Gold Oxide Hi-Molybdenum Steel Drill Bit Set, 15-Piece