1/0-Gauge Silver Battery Cable 25' spool
The outter sleeve is very supple and will bend quite well. It is also thick. HOWEVER, it is NOT CLEAR. It is dark grey. Not a big deal for me. The inner cable is not pur copper...looks to be coated (Silver). It is copper strands though. It does look to be a bit thinner in the stranded area, but I haven't measured it so that's just my opinion. It does work for my 2k watt inverter just fine.