2/0 Copper Wiring with Copper Lugs. 
 
Battery Wiring for use with the following:
 
1) Battery to Control Box. 
2) Battery to Battery. 
3) Control Box to Inverter. 
 
Lengths available in the following sections:
 
(10ft red + 10ft black) 
(20ft red + 20ft black)
 
Wiring comes pre-terminated on both ends with Battery Lugs (3/8" diameter hole).