1、Outstanding Performance: Our set of 50 mini twist drill bits are made of premium high-speed steel with a titanium coating for added durability, providing exceptional wear resistance and longevity. 2、Wide Range of Sizes: This set includes a variety of sizes (1/1.5/2/2.5/3mm) to meet your specific drilling needs, providing optimal versatility. 3、Portable Design: With its compact design, this twist drill set is easy to carry and convenient to use, allowing you to complete your drilling projects with ease. 4、Versatile Adaptability: Ideal for use in DIY, home, construction and general engineering projects, these metal twist drill bits are suitable for a multitude of applications. 5、Versatile Applications: This drill bit set is perfect for drilling wood, plastic and aluminum, providing reliable performance and precise drilling in various materials.