Pizza dough can be stretched, tossed, or rolled to get it into the right shape and size. Rolling is accomplished by using a simple rolling pin. There are, in general, two kinds of rolling pins: the classic style with two wooden handles on the ends (usually with ball-bearing inside allowing for a smooth roll), and the French-style rolling pin, which is usually longer and sometimes tapered towards the ends.
The key to choosing the right rolling pin for you is to get a feel for it. You want it to feel sturdy and comfortable in your hands. It should be easy to grip and use and have enough weight to get the job done.