wtb-valve stem

hey guys i was wondering if you could help me out i was changing my tires and my valve stem broke. i was told its japanese valve stem its real small at the part that drops in. it drops in from the top and bolts up from the bottom and i cant find one any were does any one know what im taking about or no were i can get one looks like this http://zartronix.com/store/images/ave/valve.jpg

thanks dustin

you can most likely use a generic rubber one if you are in a bind, they are available at CT, NAPA or parts source i prefer the rubber ones because they are flexible for instances like the one you had when your stem broke.
Jeff