Firewall Cable Routing: Designed to safely and cleanly route battery cables through a firewall for remote-mounted battery installations Heavy Duty Terminals: Features durable 3/8"-16 brass terminals for secure power and ground cable connections Complete Connector Kit: Includes one red and one black bulkhead connector for easy identification of positive and ground connections Installation Requirements: Requires a 1-1/4 inch hole and installs easily through panels or firewalls for a professional finish Quality Construction: Natural finish brass construction offers excellent strength and electrical conductivity, sold as a complete kit Remote Battery Cable Firewall Bulkhead Connectors, Red and Black These handy connectors allow you to run your battery cables through a firewall the right way. Utilizes heavy duty 3/8" x 16 brass terminals. Requires a 1-1/4" hole. This pair includes one red connector and one black connector for easy power and ground connections. Kit Includes: (1) Red Bulkhead Cable Connector (1) Black Bulkhead Cable Connector