quote; That breaker is called a quad.
A "quad" is a two pole breaker with FOUR levers, not a single pole with two levers, which is what this person is asking about. Incidentally, WHY do you need this double pole breaker? Not for a 220/240 circuit, I hope. In addition, in order to limit the possibility of overloading the panel, they usually restrict the location and number of "piggy back" breakers you can install. They do not always fit in every single pole slot.