Skateboarding truck sizes?

Question

Im about to get trucks off this website and i want ones that will fit a deck around 7.9 inchs perfect and that would also fit a 7.75 well and i want to get these http://www.blackholeboards.com/Exec/product.asp?userid=99942602898960&item_id=103810

Answer 1

yes it means they are 7.5 inches

i always had my trucks the same size as my board and so have my friends.

Answer 2

yes the 7.5 means that they are 7.5 inches. but that's nowhere near important, truck width doesn't matter unless you're bombing hills or doing primos, but it's your call