Hss Twist Drill Bits Split Point Shank Drilling Bit - 1 / 0.31"X4.5"

Applications & Features:--- The straight shank design is suitable for a variety of electric drill machines. Also perfect for electrical drilling on both flat and curved surfaces such as wood, steel, cast steel, malleable iron, etc.--- The sharp spiral groove improves drilling efficiency and makes it easier and less labor-intensive to use. Split Point tip starts on contact to keep the bit from walking for fast accurate holes.--- Fully ground body with bright finished ensures precision and durability.--- Made of high-speed steel, ensuring its high hardness, durability, wear resistance and heat resistance.Useful Tips:--- Please select the appropriate rotation speed and apply the appropriate amount of pressure. Excessive rotational speed and excessive pressure may cause damage to the drill bit or a decrease in drilling quality.