1. Adjustable Soldering Clamp Holder This tool holds and fixes various types of mobile phone motherboards and circuit boards during disassembly and . It supports electronic component repairs, computer motherboard repairs, instrument maintenance, circuit board soldering, and disassembly. Provides stable positioning to improve accuracy and reduce handling risk during delicate work. 2. Five Clamping Jaws with Different Sizes Equipped with five clamping jaws of different sizes to prevent displacement and ensure secure clamping. Jaws correspond to motherboard thicknesses: 4 mm, 2 mm, 1.8 mm, 3 mm, and 2 mm. 3. 360° Rotatable Head The head can rotate 360 degrees to fix the motherboard at any desired angle. Enables convenient and precise operation during and assembly processes. 4. Adjustable Opening Distance Opening distance is adjustable to accommodate various sizes of motherboards. Capable of clamping motherboards up to 200 mm, suitable for a wide range of motherboard and circuit board sizes. Smartphone motherboard disassembly and , including component replacement and rework. Computer motherboard maintenance or rework, including soldering and component testing. Instrument maintenance and other circuit board work requiring stable, adjustable positioning during soldering or disassembly.