Thunderbolt Cobalt Drill Bits

Milwaukee - Thicker web provides greater strength and longer life - 135° split point tip starts on contact to prevent walking, while the parabolic flute clears chips fast Reduced slipping: 3-Flat Secure-Grip™ shank holds the bit firmly in the drill chuck Versatile: Reduced shank diameter for use in 3/8" chucks - Designed for high performance with stainless steel, high alloy steel and cast iron - Cobalt Coating