Have you seen/used this item your self???
I have used what looks the same in the electrical field and there is no common buss bar, so you have to jump one side with small jumpers which means TWO wires per screw hole.
The 125amp rated strips I used have a .250" hole for the wires.
Not so easy to jump with 2 heavy wires or brass u-connectors.
I like the BB2-8 type of these for distribution from heavy wire to lighter gauge.
http://www.newmarpower.com/Terminal_Strips_Bus_Bars/Terminal_Strips_Bus_Bars1.html
http://www.newmarpower.com/Terminal_Strips_Bus_Bars/Terminal_Strips_Bus_Bars1.html