True AWG 1/0 gauge power or ground wire.  
-This wire is Copper Clad Aluminum.
-Matte Finish for increased flexibility. 
-This wire has an internal diameter of 13 mm (just under ½”) and an outside diameter of 16 mm (just over 5/8”)
 
Warranty Information: Returns are accepted if spools or products are untainted and have not been tampered with or destroyed by user error in anyway. Return shipping is at your expense.