[da_chicken]

You want to use 17 mm bolts to hold your fuel cap on? And your wiper blades? And your rear view mirror?

Some standardization is a great idea, but including the word "all" is what makes it academic and impractical. And if you're not going to be absolutist about it, then you're just using marketspeak.

[blueflow]

Yes, i do! At least that all of their heads are 17, IMHO a pretty good and already common size.