Soldering Bit

The soldering iron tip, also known as the soldering tip or soldering bit, is the detachable end of a soldering iron and is the critical part of the tool that gets in contact with the solder and the components being soldered.
Soldering iron tips are the metal points on a soldering iron that you use to melt the solder, and they are an essential part of a soldering iron. Soldering iron bits come in different shapes and sizes, used for various purposes.
Some soldering tips have a rounded end, while others are pointed at one end and flat at the other. The tip size will determine what kind of work you can do with it. For example, a large tip is suitable for soldering larger pieces together (such as a printed circuit board (PCB)) but could be better for working on small wires (for instance, if you are working on wire jewellery)