Top post replacement battery terminals feature copper construction for maximum power. Terminals are plated for corrosion resistance giving longer life to your battery cable. Terminals can be crimped or soldered. Each terminal comes with a nut and bolt giving tight connections to battery post for solid electrical contact. Before installing select the correct polarity and AWG gauge terminal for your battery cable. Recommend pre-measured Solder Pellet PICO #0624 when soldering. For additional weatherproofing Heat Shrink Tube can be added during installtion. Heat Shrink Tube also protects from corrision, can color code for polarity and acts as a strain relief on the connection.