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-111-02 is a kit with a red and black BU-111, a mid-size Kelvin battery clip with electrically isolated jaws. Useful for accurate electrical impedance measurement. Close up of jaws on...