Help Identifying this Cable?

Any ideas what this cable is? WBT-0110 Cu connectors. Not sure if these are the standard connectors for a certain cable (with what looks like a grounding wire) or if it's likely a custom/DIY cable.

https://www.dropbox.com/s/aul7a1b9r65hf64/IMG_20181102_202354478.jpg?dl=0

Thanks!