Unique Bargains High Speed Steel Straight Shank Extra Long Twist Drill Bits 5 Pcs

Made of high-speed steel, with high hardness, heat resistance, wear resistance, durability, and long service life. The jobber extended drill is suitable for a wide range of applications, allowing you to access hard-to-reach areas where ordinary drills cannot. High-hardness twist drill bits will make drilling easier and more efficient. 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, leaving a smooth hole. Please keep it cool and gentle when using it; the correct use can greatly extend the life of the twist drill. For drilling on thin aluminum, copper, wood, and PCB board. Not suitable for concrete, masonry, and stainless steel.