The high strand count of wire in conjunction with a soft and supple insulating jacket make this chunky true spec 4g easy to route through tight mazes of odd angles.
A few applications where this wire really shines aside from the obvious car/marine/ATV audio, is DIY projects, like making power bank jumpers, or short power runs for making an electric kayak :)
The tinned OFC is well suited for marine environments over straight copper, or CCA.
This stuff kicks arse! Get some if you want the peace of mind that your power supply line isn't going to corrode and rot out after a few years, especially if the install environment is subjected to elevated moisture, or condensation.