1、Various Specifications: The kit contains 24 screwdriver bits and 1 handle, with 9 specifications and are suitable for different maintenance needs. 2、S2 Alloy Steel Bits: The screwdriver bit is made of S2 alloy steel, which has high strength and hardness, and is not easy to deform. 3、Aluminum Alloy Handle: The aluminum alloy handle has a special non slip treatment with a cover, making the operation easier. 4、Standard Size: These screwdriver bits have standard sizes, can be connected tightly, and can be replaced at any time. 5、Used for Precise Maintenance: The precise bit is suitable for daily repair, such as watches, cameras, radios, laptops, mobile phones and household appliances, etc.