AmScope - Adjustable Circuit Board Holder and Clamping Kit Circuit board holders are a necessity when working on PCB’s, doing cell phone repair, for industrial inspection or in any situation with any object where access to difficult and small places is required. They are used in many industrial applications and especially with stereo microscopes. Easy to use, just clamp the object to be worked on into the spring-loaded clamps, rotate to the desired angle and lock in place. The holders rotate 360 degrees providing easy access to all sides of objects. 360 Degree Rotation ABS Arm with Spring-Loaded Clamp supports 360 Degree Rotation, allowing you to easily flip the board. Adjustable Clamp Working Clamp is Adjustable, and Retractable to Accommodate Various Board Sizes, and Suit Different Projects A Multi-Use Tool Ideal for Soldering, Inspection, Circuit Boards, Phone Repairs, and many more Functions and Applications!