These 6 mm bullet connectors are gold plated. It is used for high power as it can carry up to 60A. Use these bullet connectors to connect two rc parts that you want to be able to disconnect easily, for example when connecting a brushless motor or battery to a speed controller. 

How to use?

You will need to solder on a wire to one end of each 4mm bullet connector. In some instances it is recommended to surround the exposed ends of the bullet connectors with heat-shrink tubing.