This is a group of Metal Tire Valve Stem Grommets 20 Ct Look at Photos Dirt Bike, Motorcycle.  What part of the valve stem you're getting is what is shown in the photos.  As near as I can tell, this is what they are.  I have grouped them into bags of 20+ grommets.  NOS item.  They have been in a motorcycle shop and were taken out of their original packaging.  I do not have the exact measurements.  Free shipping within the 48 continental US states only.  Questions are always welcome.  Thanks so much.