Material: Alloy Steel Sizes: 50mm, 75mm, 100mm, 150mm 1. High Quality - Made of high-quality materials, with good durability and longevity, ensuring long-term use. 2. Universal - Suitable for various type of screws and nuts, both for home repairs and professional use, easily applicable. 3. Easy Operation - With the design of a hexagonal shank, easy to replace and simple to operate, users can easily complete their work. 4. Safety Protection - Using a safety torque design, ensuring a secure connection between screws and nuts, reducing the occurrence of errors and accidents. 5. Diversified - Providing multiple sizes and models for selection, meeting different needs and better satisfying users' requirements. Package includes: 1 set *Hex Shank Hole Security Torx Bits.