1. Material and design The tension spring is made of stainless steel, providing both flexibility and durability. The holder is compatible with a variety of mobile phones, tablets, and electronic PCB circuit boards. 2. Easy to use Adjust the width with two movable positioning blocks. Align the motherboard to the desired position and tighten the screw to secure the board in place. 3. Application and size Holder size: 12 cm x 8 cm (4.72 in x 3.15 in). An ideal tool for clamping circuit boards during soldering, desoldering, or rework. 4. Stainless steel PCB holder The holder is made of thick stainless steel that withstands heat, providing stable clamping for mobile phone PCB boards during soldering, desoldering, or rework. 5. Practical use scenarios Securely clamp mobile phone PCBs during soldering or desoldering tasks to prevent movement. Hold tablets or other electronic boards in place for rework or component replacement in a workshop or lab. Use as a stable fixture for testing, inspection, or layout checks on desk or jig setups.