HOIIME150A 48V Bus Bar Power Distribution Block with 4 x M5 Terminal Studs, High Performance Module Heavy-duty BusBars with Transparent Cover for Cars RVs Ships Yachts (Black & Red, 2 Pack)

Lots of busbars just like this on the market. It is reasonably priced and works well for the intended purpose. Comes with a cover which is nice as not all of them do from what I know. Had it installed temporarily while I was still working out my setup and it worked perfectly. Ended up using a bigger 'heavy duty' one as needed more than the 150A rating of this one.

I am using this bus bar for my 12v lifepo4 battery setup. I have two batteries in parallel connected running to the charge controller and inverted - this bus bar just tidy's up that wiring and makes the whole system a lot smarter. M6 bolts, plastic cover to protect.