Features: Brand new and high quality This set is perfect for various tasks, offering exceptional performances and durability. The optimized heat treatments process ensures quality of the screwdriver Bit, making them suitable for heavy use. Suitable for wide users, including maintenance worker and worker who frequently use power tool. Whether home repairs, mechanical maintenance, projects, design to handle different screw type. The practical storage box provide easy organization and secure transportation for the set, making it a convenient choice for professional and hobbyists. Specifications: Material:Metal Size:Approx.14.4x9.8cm/5.67x3.85inch Package Includes: 27Pcs Screwdriver Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.