Description:1. Crafted from high-speed steel, offering improved hardness, heat resistance, and wear resistance to extend tool life.2. Nitriding surface enhances durability, enabling it to withstand higher temperatures and tough materials, reducing the risk of overheating and tool damage.3. Split point tip and twist design increases cutting speed while easily self-centering to prevent movement. The twisted design of the drill bit quickly removes drilled chips,resulting in cleaner, more precise cuts, improving overall drilling efficiency.4. Use lubricant like cutting oil or coolant, especially when drilling metal, to reduce friction and heat, further prolonging the drill bit's lifespan.5. For drilling on thin aluminum, copper, wood, PCB board. Not recommended for tiles, concrete, masonry, wall and stones.Specification:Material: M35 HSS(High Speed Steel)Flute Type: SpiralDrill Bit Diameter:27/64-inch (10.7mm)Drilling Depth:3.75-inch (95.3mm)Shank Diameter:27/64-inch (10.7mm)Total Length:5.5-inch (139.7mm)Package Content:5 x HSS Twist Drill Bits
