【Professional Repair Tool Kit】: The 57 Piece Screwdriver Bits & 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 and Variety of Bits Kits】: 54 different types of bits, 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 drill bits and will not be stripped. 【TIge Extension cord and non-slip conductor】: The electronic repair kit is equipped with an extension rod. The unique non-slip handle is made of aluminum. It also features a ball bearing mounted swivel plate to make your task or job easier. 【Flexible Adapter and Screwdriver Rod】: A precision screwdriver set includes a flexible rod, ideal for working on stereos, as well as for large electronic components where the screws