1.Alloy S2 Steel Bits,Alloy Aluminum Handle 2.HUMANIZED DESIGN:Premium screwdriver tool set with ergonomic design and multiple workmanship including surface anodizing and knurling treatment make sure its unique appearance with anti-sweat, anti-corrosion, non-slip feature. 3.TOUGH S2 BIT:22 screw driver bits made from alloy S2,HRC 58-62,processed by hardness and toughness test,weakness magnetic on tip will not destroy your sensitive electronics like watch. accurate CNC machine process ensure it's precision and won't strip your screws. 4.EXTRA LONG AND SLIM BITS:1.77 inch(45mm) long screwdriver bit for those hard-to-reach jobs in deep holes,perfect micro screwdriver set for computers,laptop,game controllers,toys,etc. 5.WIDE APPLICATION: 22 in 1 precision screwdriver set is a professional repair tools for iPhone, iPad, MacBook, Cell Phone, PC, Computer, Laptop, Tablet, Camera, Game Consoles, PS4/Xbox Controller, Watches, Glasses and other electronics. Whatever you are a professional or amateur in the IT world, you can easily use this electronics tool kit to repair phones, computers and laptops. 6.PATENT DESIGN: Precise screwdriver with build-in extension shaft,you can release it when you need to fix screws in narrow place and retract it after finished, turning end for better control. 7.QUALITY ASSURANCE: is a company committed to innovating lifetime tools who aiming at providing a great experience with premium customer and the quality of the product.