The BU-21APN is a steel automotive clip designed for various electrical connections. It is constructed from zinc-plated steel and is rated for a current of 50 Amps. The clip has an overall length of 4.1 inches, a maximum jaw spread of 1.06 inches, and connects to wire up to 8 AWG via a crimp or 10-32 screw connection. This RoHS 3 compliant clip is compatible with Mueller BU-23 PVC insulators, making it a versatile component for automotive testing and other electrical applications.