It's a bad product because it allows options? You can easy split 4 4 gauges from 1/0. Cut the wire and hook them up. That simple. But It depends on what you using them for to clarify if the 1/0 could keep up. In my case it will be for things that will never run at the same time. On top of the fact I could run bigger then 1/0 into that block and smaller then 4 with the adapters that come with.I think because it's not a good product. How do you think you can split 4 4awg off 1 0/1.
If I was splitting into 2 4awg then yes. 4 seems to much