?Durability & Reliability? To ensure longevity and durability. These bits are CNC machined to be precise. You can count on these tools to help you remove and replace security fasteners. This multibit screwdriver set is covered by lifetime warranty and 30 days money-back. If you have any issues, please don't hesitate to contact us through, we will do our best to help every customer. ?31 PCS Precision Bits?The computer tool kit has 29 pieces 4mm bits (Phillips, Flat head, Torx, Pentalobe, Tri-point, Hex, Gamebit, etc), which is useful for computer, laptop, PC, mobile phone, MacBook, iPhone, PS5, Nintendo Switch, Xbox Series game consoles/controller, tablet, iPad, smart watch and more. This is the electronic screwdriver set every IT tech, DIYer, fixer, hobbyist, and professional needs to tackle any repair job, also a decent gift for your family, friends, colleagues, etc. ?Portable Storage Box?This computer tool kit is equipped with a storage box made of impact-resistant PP material. The space, placement position, and the size of accessories are designed reasonably, which is convenient for your work and the parts are not easy to fall off. This laptop screwdriver kit to meet your most of the daily repair needs. Choose this professional laptop repair tool kit and try to give your family or friends a surprise. ?Precision Screwdriver Bit Set?The magnetic screwdriver bits are made of high-quality CRV steel with hardness up to 60HRC, which is greatly improves the resistance to rust as well as endure a heavier load. The screwdriver can easily hold screws on the magnetic bits and prevent small screws dropping. The screwdriver bits are through strict quality testing and guarantee for long time use. This professional computer screwdriver kit will be your best choice. ?Non-slip Handle Design?The knurled grip handle of the screwdriver is ergonomically shaped . made of high quality Chrome Vanadium Steel to prevent slipping and deliver comfortable control and maximum torque. Magnetizer driver makes it easy to hold bits and pull screws out. It is equipped with a hard extension shaft , which is easy to be extended to a narrow place where the handle cannot enter. The top 360° rotating cap design allows to push and tighten/loosen easily.