About this article. Professional repair tool kit: The 57 Piece Screwdriver Bits and Extensions Tool Set allows you to open and repair all electronic devices such as laptop, tablet, cellphone, iPhone, computer, MacBook Air and other items. With Torx T6, T7, T8, T9, T10, T15, T20 security bit. Convenient kits and variety of bits: 54 different types of end caps, made of Cr-V steel. Harder than normal products, ensuring durability and long term use. The bits are sturdy, durable, and will not be easily broken. The small screws can be easily unscrewed with the bits and will not be stripped. Extension length and anti-slip conductor: The electronic repair kit is equipped with an extended rod. The unique non-slip handle is made of aluminum. It also features a swivel plate mounted on ball bearings to make your task or job easier. Flexible Adapter Rod and Screwdriver: A precision screwdriver set includes a flexible shank, ideal for working on stereo systems, as well as large electronic components where the screws are not on the surface. See more details.