Features: 37 in 1 screwdriver combination kit, using a color coding system to distinguish different bit by color, allowing users to quickly find the required tool. The specially grooves ensures that the bit is stable and doesnot fall off during use, effectively avoiding the impact of accidental dropping on maintenance efficiency. After experimental verification, the durability have been doubled, making it suitable for disassembling and assembling precisions equipment such as mobile phones, glasses, and laptops. The rear hat belt bearing use low center of cylindrical device, which can effectively reduce hand fatigue during use and generate flywheels effect. Compared with ordinary screwdriver, it is easy to apply force and suitable for technicians and DIY enthusiasts who operate for long time. This set have multiple specifications of bit, suitable for various devices such as mobile phones, tablets, and computers, and solves various maintenance needs. Both home users and professional repair shops can easily handle various tasks. The storage box design make the entire set of tool weigh only 350g, making it easy to carry around. Solved the problem of cumbersome tool when going out, it is very suitable for users who need small repairs during travel. Specifications: Component: Steel1,Steel2 Size:Approx.157mm/6.28''x66mm/2.6'' Package Includes: 1Set precisions Screwdriver note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.