These drill bits feature a black oxide surface that retains lubricant, improving the drill's wear resistance and chip flow. High-speed steel drill bits offer greater flexibility and absorb more shock and vibration than cobalt and carbide drill bits, making them suitable for use with hand drills and handheld power tools. They may leave a rough surface on the hole. These drill bits have spiral flutes that expel chips as the drill drills into the workpiece.EUROCUT is known for its excellent performance and multiple functions. The drill bit is uniquely designed and cuts stably, maintaining precise and efficient drilling no matter what kind of material it is faced with. The innovative taper drill bit design provides a solution for applications requiring long drilling. Special cutting edge design, which is the key to its high efficiency and durability. The selection of carbide materials and the application of a heat treatment process ensure the strength and durability of the drill bit, while also providing excellent support for the tool tip.In addition, the tang design allows it to be used with a split-socket screwdriver, which undoubtedly increases its flexibility in different application scenarios. Whether it is home repair or industrial manufacturing, EUROCUT can meet your needs with its excellent performance and diverse functions.