?Lifetime Warranty?The precision bits are made of 60HRC Chromium-vanadium steel which is resist abrasion, oxidation and corrosion, sturdy and durable, ensure long time use. This small screwdriver set is covered by STREBITO lifetime warranty and 30 days money-back. If you have any issues with your electronics tool kit, simply contact customer service for troubleshooting help, parts, replacement or refund. Buy the STREBITO electronics toolkit with confidence. ?Organize & Portable?All screwdriver bits are stored in rubber bit holder which marked with type and size for fast recognizing. And the repair tools are held in a tear-resistant and shock-proof oxford bag, offering a whole protection and organized storage, no more worry about losing anything. The tool bag with nylon strap is light and handy, suit for your tool case, easy to carry out, or placed in the home, office, car, drawer and other places. ?Magnetic Design?We put 2 magnetic tools in this laptop repair tool kit that save your energy and time, make your fixing job easier. The 5.7 x 3.3" magnetic project mat can keep all tiny screws and parts organized, prevent from losing and messing up, make your repair work more efficient. Magnetizer demagnetizer tool helps strengthen the magnetism of the screw driver tips to grab screws, or weaken it to avoid damage to your sensitive electronics. ?Humanized Design?Our pc building tool kit has been designed with the professional in mind to maximize your repair capabilities. The screwdriver features a rubberized, ergonomic handle with swivel top, provides a comfort grip and smoothly spinning. Magnetic bit holder transmits magnetism through the bit, helping you handle small screws and parts. The blade can be extended for working in hard-to-reach areas. And flexible extension shaft is useful for removing screw in tight spots. ?Wide Application?STREBITO precision screwdriver set has 120 bits, complete with every driver bit you'll need to tackle any fix or DIY project. In addition, this precision tool kit comes with 22 accessories, such as magnetizer, magnetic mat, suction cup, spudger, cleaning brush, tweezers, etc. Whether you're a professional technician or a amateur, this computer toolkit has what you need to repair all PC, cell phone, Macbook, PS4, Xbox, game controller, tablets, glasses, watch, etc.