This works well, but even a hammer drill I have and a 20v drill do not split wood with this tool as it bends them. I was trying logs cut into round strips of 12~15 centimeters and none of my tools opened them with this specific bit

It is what it says. The only problem with it (but it's not the tool's fault) is that it requires a very powerful drill, over 1500w. Mine is 1000w and it barely manages to break pieces for rebar. Anyway, it's very good.