The BU-30211A-02 is a kit containing a red and black BU-30211A, which allows standard, sheathed, or retractable 4mm banana plugs to interface with standard 4mm spade terminals.
The BU-P72913 is a 10-pack of Mueller's low resistance, panel mount 4mm banana jacks. The high temperature nylon shell resists most industrial chemicals and the gold-plated contacts allow for low...
