Hyjoy 3 PCS Cobalt M35 Step Drill Bits Set from 1/8" to 7/8", TiAlN 4 Spiral Flute Step Bit for Steel, Metal, Aluminum, Plastic

M35 HSS and TiAlN : The drill bit is made from 5% Cobalt M35 HSS (-speed steel) and with TiAlN, making it more and , particularly suitable for use steel. 4 Spiral Flute: cut faster and smoother and allow chips to escape easily 118° Split Point Tip: boosts efficiency with self-centering and stops wandering 3 pieces of drill bits from 1/8" to 7/8"-1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" Broad Utility: for creating holes in materials such as steel, plastic, aluminum, iron, copper, and other sheet metals