About This Sharp Cutting Edge - HIGHFIRE hex shank drill bit set has accurate tip geometry which ensures cutting edge sharp and strong. 135 degrees split point tip provides a no-walking drilling start on working surface. Hex Shank Bits- Hex shank drill bits fit in quick-change impact drivers. Hex shank eliminates shank spinning in chuck when using pressure. Solid Connection and Tapered Web - The strong connection of drill bits and shank transits high torque from drills to the tip of the drill bit without breakage. It also decreases radial runout to make the hole rounder. HIGHFIRE hex shank drill bits with tapered web design increases strength and reduces breakage. Twist Flute and Titanium Coating - With optimized flute form, HIGHFIRE drill bit decreases friction and heat easily to ensure fast drilling and a long working life. 135-degree twist flute helps to remove chips quickly. TiN coating extends drill bits life 3 times longer. Wide Application - HIGHFIRE drill bits are built for general purpose, such as DIY projects, maintenances, repairs and operations. Working materials include steel, copper, aluminum and zinc alloy. They are ideal metal drill bits for steel. Overview Material : Industy Grade 4341 High Speed Steel Cutting Diameter : 0.38 Inches Finish Type : Titanium Shank Type : 1/4（6.4mm) Hex Shank Quick Change Cutting Angle String : 135 Degrees
