1、Fixed Testing Probe: This electronic soldering aid has a fixed testing probe, which can be pressed and fixed IC, and it is much easier to solder. 2、Adjustable Probe: The upper part of the probe of this electronic soldering aid's fixed test probe can be withdrawn, and the height and length of the control needle can be adjusted back and forth. 3、Flexible Arm: The arm that holds the test probe on this electronic soldering aid can be adjusted up and down and rotated 360 degrees. 4、Excellent Aluminum Alloy Material: The fixed test probe of this electronic soldering aid is made of excellent aluminum alloy material, which is sturdy and wear resistant, not easy to be eroded, and resistant to high temperature and not easy to be deformed. 5、Wide Application: The fixed test probe has a wide range of applications and can be used for soldering electronic parts, handcraft parts, and jewelry parts.