Milwaukee's Thunderbolt® Silver & Deming drill bits are designed for performance in low to high tensile strength materials, stainless steel and cast iron. Thunderbolt® twist drill bits are made from premium industrial-grade steel with heavy-duty cutting surfaces that power through deep or shallow holes with lightning speed. A special flute geometry adds strength while providing increased chip ejection. Thunderbolt® twist drill bits have a heavy duty 135 degree split point for easy penetration and a 1/2 in. reduced shank with 3 milled flats which prevent slippage in a jawed chuck. One per package.

Milwaukee® Silver and Deming Drill Bit, 1 in Drill - Decimal Inch, 6 in Overall Length, Parabolic Flute, 3 in Flute Length, 1/2 in Shank, 3-Flat/Reduced Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, Oxide Treated, Applicable Materials: Metal, Plastic and Wood