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, 5/8 in Drill - Fraction, 0.625 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, Black Oxide, Applicable Materials: Metal, Plastic and Wood

• Extreme durability - thicker web provides greater strength and longer life
• Fast, accurate drilling - 135 deg split point tip starts on contact to prevent walking while the parabolic flute clears chips fast
• Versatile - Reduced shank diameter for use in 1/2 in chucks
• Corrosion-resistant - black oxide coating provides lubricity and resists corrosion of the bit