【HSS Titanium Coating】High speed steel (HSS) with titanium coating gives Jefe Hex drill bits great durability and prolongs 3 times longer life than drill bits without coating.
【135 Degrees Split Point and Parabolic Flute】Jefe Hex Easy Cut Split Point design makes drilling easy with less pressure and prevents drill bits walking on the working surface. Fully ground modified parabolic flute design clears chips quickly, decreases friction and heat damage. Tapered web provides durability and reduces breakage.
【Quick Change Solid Hex Shank】1/4" (6.35mm) hex shank fits into standard power tools and impact drivers. Jefe Hex drill bit’s solid bonding technology eliminates radial runout and improves concentricity. High torque, impact-rated accuracy.
【Wide Applications】 Jefe Hex drill bit sets are built for general purpose applications, such as DIY projects, home maintenance and MRO (Maintenance, Repair and Operations). Working materials include steel, copper, aluminum, zinc alloy, cast iron, wood and plastics.
【Package & Dimensions】 Size variety includes: 1/16"x3, 5/64"x2, 3/32"x2, 7/64"x2, 1/8"x2, 9/64", 5/32"x2, 11/64", 3/16"x2, 13/64", 7/32", 15/64", 1/4", 5/16", 3/8", and 1/2". This set features commonly used sizes along with additional small diameter drill bits. All bits are securely housed in a durable and professional-grade plastic case with an indexed holder for easy organization and retrieval.