GOKU HEX BS13A 6in1 ESC

Does anyone have experience using this 6in1 ESC? Can you share?
No detailed info on 13A, it is each arm or the entire board. I cannot locate the detailed specification as well. There is no support link.

Found a user and he gave an insight into the 6in1 ESC, a bit weird that missing a GND signal pin with non-Flywoo FC.

Or if you have come across other brand of 4S 6in1 90A (full board) ESC + BEC (optional) + PMU (optional), light weight, do share.

okay, Goku Hex BS13A 6in1 is per arm.
Now is where to get the ground signal for the third-party flight controller.

just get a ground at the battery pad.