Haltec Quickstem Straight Push Through Valve Stem - available in multiple sizes and quantities

We always bring these and a pump for our weekend campouts. never have to break down a tire to fix a broke valve.

Holy cow-- I wish I'd known about these before. just cut the bad rubber valve off and push the base into the hole. Tighten up the nut and air your tire back up. Worked great on my ATV-- broke a valve on the trail and this kept me from having to take the tire off the wheel.