Red battery terminal connector for car RV boat 3/8in thru stud 250A1、Function: These handy connectors allow you to run your battery cables through a firewall the right way without worrying about rubbing wires. 2、Easy Use: Heavy duty 3/8in brass terminals, rated current 250 Amps. This battery terminal connector is used to easily connect power and ground. 3、Premium Material: Made of rubber, zinc alloy, brass, ABS various materials to ensure stable performance and long term durability. 4、Rigorous Testing: Undergone multiple strict tests before leaving the factory to prevent rust and wear. Provides firm attachment points for installation. 5、Wide Application: This battery terminal connector is widely used in power systems such as automobiles, RVs, ships, yachts, racing cars, and agricultural vehicles.