9 centimeters. Youth Tower is a new food introduced by kfc in 20021year. Youth Tower is composed of fried chicken rolls and crayfish, which tastes similar to Hamburg, and its shape is a little bigger than Hamburg, with a size of 9 cm and a price of 23 yuan/serving, so KFC Tower can be 9 cm young. KFC is one of the multinational chain restaurants in the United States and the second largest fast food and the largest fried chicken chain enterprise in the world.