i think it would be easier to ask (since this is what the forum is for) for some help. I've tried so many google searches and i come up with the same product or products unrelated whenever i put variations of this name.
basically im looking for an 11mm hex hub that fits a 4mm motor shaft.
can anyone list me places that i could go and find them?
or alternatively anything that fits(still using the 4mm shaft):
-12mm bore
-1/2" bore or 12.7mm bore
Are you looking for a hex shaped hub? Sorry I'm slow.
Will this work?
im using one of the polulu 4mm shaft motors.
those wont work because the supplier doesnt have a wheel with that sort of bore size 
How about this
http://www.trossenrobotics.com/store/p/5836-1-2-Inch-Hex-Mount-Hub-4mm-Shaft-0-4-Inch-Wide.aspx
yeah i am considering those as one of my options, but non of the hex bores are that size. there is a circular bore of that size and i might put that into it and fill it up with nylon so it sticks. its a possiblity =/