InstallGear 4 Gauge AWG Crimp Ring Terminals Connectors - 10-Pack (5 Positive, 5 Negative) 10 pack of 4 gauge crimp ring terminals (5 positive, 5 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"