NFL props

Does any of your guys online books offer this type of prop bet? I normally don't mess with props, but tonight is a slow night and thinking about laying a little bit on 2-3

mostly all books offer that

called winning margins

or under game props, each site is different,

5dims is good for that, near best value

I figured so, I just hadn't stumbled across them before. I rarely place prop bets outside of a few NBA