What kind of snake is this?

[pongboy]

My friend had to get rid of his snake due to his wife not wanting it. I have taken it from him but I know very little about snakes. He only had it for a few months because it was a gift given to him, so he doesnt know the exact breed. I'd like to now how big he will grow and possibly how old he could be along with any other valuable information I could use in keeping him. Thanks for any help.