29-Piece Thunderbolt Black Oxide Drill Bit Set | 48-89-2802

48-89-2802 29-PIECE THUNDERBOLT BLACK OX Extreme durability: thicker web provides greater strength and longer life Fast, accurate drilling: 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 in. chucks Corrosion resistant: black oxide coating provides lubricity and resists corrosion of the bit