Kaisi 28 in 1 Portable Manual Precision Screwdriver Set – Compact S2 Alloy Steel Repair Toolkit
The Kaisi 28 in 1 Portable Manual Precision Screwdriver Set is engineered for precision electronics repair, combining portability, durability, and professional-grade performance in one sleek toolkit. Designed for mobile repair technicians, hardware engineers, and DIY enthusiasts, this compact set includes high-hardness S2 alloy steel precision bits, magnetic screwdriver functionality, and a lightweight storage box for organized everyday repairs.
Its ergonomic aluminum alloy handle ensures comfortable grip and precise torque control, while the magnetic bit system securely holds tiny screws for hassle-free assembly and disassembly. Whether you’re repairing smartphones, laptops, watches, eyeglasses, gaming accessories, or household gadgets, this versatile 28-in-1 toolkit provides reliable performance for delicate and detailed work. The portable design makes it ideal for workshop benches, travel repairs, and on-site technician jobs. S2 alloy steel construction (around 60HRC hardness in comparable Martview-listed precision sets) is built for durability, anti-rust resistance, and accurate screw fitting.
Key Features:
- 28-in-1 portable manual precision screwdriver toolkit
- Premium S2 alloy steel screwdriver bits for durability and precision
- Magnetic screwdriver handle for secure screw retention
- Ergonomic aluminum alloy body for anti-slip comfort
- Compact lightweight storage box for portability
- Precision repair support for phones, laptops, tablets, watches & glasses
- High-hardness anti-rust bit construction
- Easy bit replacement with organized compartment design
- Suitable for professional GSM technicians & DIY electronics repair
- Designed for delicate screws and small electronics servicing
Technical Specifications:
- Product Type: Manual Precision Screwdriver Set
- Model: Kaisi 28 in 1 Portable Set
- Total Pieces: 28-in-1
- Bit Material: S2 Alloy Steel
- Bit Hardness: Approx. 60HRC
- Handle Material: Aluminum Alloy
- Magnetic Function: Yes
- Application: Mobile phones, laptops, tablets, watches, cameras, eyeglasses, small electronics
- Design: Portable compact storage case
- Usage Type: Professional repair & DIY maintenance

















