i think different types of roulette wheels do exist, and their odds can be slightly different. For example, a European roulette wheel has 37 pockets (numbers 1-36 and one 0), while an American roulette wheel has 38 pockets (numbers 1-36, a 0, and a 00). This slight difference in the number of pockets affects the odds and the house edge, making European roulette slightly more advantageous for players. Casinos may offer both types of wheels, but the odds of each spin on a specific wheel will remain the same.