Description Reviews Universal Ground Strap / Battery Cable 12" - The 4 gauge switch-to-starter battery cables are an ideal replacement option for old or damaged battery cables. This product fits up to 3/8 inch stud and has a recommended use for engine to ground connections. The battery cables are made of 100 percent copper conductors with gravity cast antimonial lead universal terminals. The full-gauge stranded copper core is flexible for easy installation and allows maximum current for quick starting. Product Information: Conductor Material: Copper Lug Hole Diameter (in): 3/8 Inch Lug Hole Diameter (mm): 9mm Main Cable Gauge (ga): 4 Gauge Main Cable Length (in): 12 Inch