10Pcs Banana Plug Connectors - 4mm Stackable Male Solder Wire Connectors (Red/Black) for DIY Audio, Speaker, and Test Equipment - Fully Insulated Safety Banana Plugs for Secure Electrical Connections

100% Brand new and high quality

Made of high quality material, the main body is brass, and the spring is nickel plated on beryllium copper surface, and the shell is plastic

This 4mm banana plug connector can be used for electric test

Connection for welding, the maximum cable diameter of 4mm

Recommended wire is 14AWG