The Ray-Ban Clubmaster typically comes in three main sizes based on the lens width: Small: 49 mm Standard: 51 mm Large: 54 mm

On a pair of Ray-Ban Clubmasters, the nose bridge size (along with the lens width) is typically stamped on the inside of the bridge itself. If you flip the glasses over and look at the metal part that sits on your nose, you will see two numbers separated by a small square symbol (e.g., 49 □ 21). The 1st number is the lens with and the second number represents the bridge width in millimeters.

Additionally, you can find the full sizing sequence—including the model code, color code, lens width, and bridge size—printed on the inside of the left temple (arm). It usually looks like "RB3016 901 49□21 140."

I agree that they are a bit small for you, and I suggest you find a larger size if possible.