I bought this 1/0 gauge cable to mate with my own DINSE 10-25 plug as the plug is exactly 3/8" " was large and the cable was supposed to be 0.373" in diameter. Well, when I stripped the cable, it was 0.42" thick, which is a little thicker than 0.373". I'm a little disappointed in getting it to work had to, but then again i still need to get my projects to work 99% of the time cut some wires and plug right in. .373" will hold 300 amps anyway.