Welcome to the naughty world. There are many kinds. Some go around the shaft some can go behind the balls.
It all really depends on the type of ring you want.
Here is the place with many of these type toys.
BdsmToyBox.com
I suggest you get one that is velcro or a belt type. So that just in case you can take it off immediately without injury to yourself.
It increases staying power by preventing blood from leaving the penis.
Hope this helped.
TigerDragon

