11/16 in. S&D Black chemical compound bit
Milwaukee’s Thunderbolt® Silver & Deming drill bits are designed for performance in low to high lastingness materials, chrome steel and forged iron. Thunderbolt® twist bit bits are made up of premium industrial-grade steel with industrial cutting surfaces that power through deep or shallow holes with lightning speed. A special flute pure mathematics adds strength whereas providing inflated chip ejection. Thunderbolt® twist bit bits have an important duty one hundred thirty five degree split purpose for simple penetration and a 1/2 in. reduced shank with three processed flats that stop slippage during a jawed chuck. One per package.