The traditional Billiard typically features a bowl with a height that matches the length of the shank. The Chimney of Stack, though, alters that proportion, with a Billiard bowl that extends in height beyond the shank's length. The Stack is still a classic shape but one with intentionally disparate proportions for the sake of greater chamber depth, and Dunhill's "12" design is a textbook example of the form. It's presented here in Group 4 size, offering plenty of chamber in a impressively lightweight form