Secure and versatile connections: 4mm banana connectors on one end and crocodile clips on the other, providing secure connections suitable for a wide range of devices and applications. Insulation material: Flexible plastic construction delivers safe operation with electrical insulation. Gold plated for low resistance: Copper connectors are gold plated to achieve low resistance and stable conductivity for effective signal transmission. Longlasting copper probes: Pure copper probe tips resist dulling from frequent use, maintaining signal transfer over time. Use scenario: Laboratory testing and measurement with instruments requiring banana jacks or clip connections for reliable signals. Use scenario: Prototyping and educational demonstrations where quick, secure connections to components and supply rails are needed. Use scenario: Battery and automotive testing, attaching crocodile clips to terminals while connecting to compatible instruments via banana connectors.