[Professional screwdriver set] The screwdriver set is made of S2 steel. The hardness is up to 60 HRC, which is sturdy and durable. Each set is well organized and packaged in an aluminum alloy box that you can easily store and remove. The inner box is magnetized, so the individual inserts are held firmly in place. You can keep it and take it wherever you go. [High Quality Bits] S2 precision steel screwdriver bits are 12mm deep and work 30% deeper than standard ordinary tips. Exceptional hardness, superior durability with high quality. Many types of tips, including Philips, Slotted, Security Torx, Hexagon, Y Type, Pentagram, Triangle, U Type, Special Type. [Precision Screwdriver Set] The screwdriver set has a Aluminum magnetic handle with a rotating cover that can be rotated 360 degrees, making the operation of the screwdriver much more efficient. [Widely used] This precision screwdriver kit can be used to repair smartphones, electronic devices, jewelers, glasses, household appliances, PS4 or game controllers. Delivery quantity: 33piece