MIBRO 492470 Cobalt Metal Master Drill Bit Set, 1/6in. to 3/8in., 17 Pieces

Tougher- Made with a special Cobalt alloy of M35 steel, they can be used on hard or abrasive materials like stainless steel and space age alloys Stronger- Extra thick drill core adds rigidity and strength Makes life easier with a 135 degree split tip to eliminate "skating" Three flats on bits 3/16-Inch and larger give the drill chuck a stronger grip on the bit, especially useful in harder materials Because of the Cobalt bit's longevity, they are an excellent value, Weight: 0.97 pounds, Manufacturer: The Mibro Group