InstallGear 4 Gauge AWG Crimp Ring Terminals Connectors - 4-Pack (2 Positive, 2 Negative) 4 pack of 4 gauge crimp ring terminals (2 positive, 2 negative) Colored rubber boots (for wire end protection and polarity identification) Gold plated finish (for maximum conductivity) Wire input size: 5/16" Ring size: 7/16"