its for testing the pressure in car tyres. you put it on the valve and the inside bit extends to show you the pressure. it has a valve on the end that has to be pressed by the inner bit of your tire.
your dads gonna be pissed.
buy a pipe
snowblind Reviewed by snowblind on . Anyone know what this is made of? i was looking at one of these in my garage, and was wondering what they are made of, and if they are safe to smoke from. i took out the little plastic middle part with the numbers, and the rubber o ring in the end. i still am not able to draw from it though, so theres something blockin from the bowl to stem. any ideas? http://static.howstuffworks.com/gif/pg-intro.jpg Rating: 5