About this product 138PCS Screwdriver Set: The precision screwdriver set comes with 100 different bits and various opening tools, magnetic screwdriver handles, flexible extensions, screwdriver adapters, etc. The repair kit can repair various electrical tools and electronic equipment no matter what you are doing. Whether it is a professional repairer or home repair, the micro screwdriver kit can meet different repair needs. [High-performance precision bits] The bits are made of the best high-hardness chrome vanadium steel, which is anti-wear, anti-oxidation, excellent performance, anti-rust and extremely durable, ensuring stability and not easy to fall off, ensuring the screwdriver repair tool kit can last for a long time. Time-saving, lightweight, compact and easy to carry. 【Flexible Magnetic Design】The mini screwdriver set comes with an extension shaft, the extension shaft is magnetic, the drill bit will be magnetized, you can easily align the drill bit even if the screw position is