Each threaded cartridge says it will inflate one road tire to 130psi:
http://www.biketiresdirect.com/produ...il.asp?p=VTF6S

My tires have a max of 110....will these things overinflate my tire?
In other words, can you use part of the cartridge to get your tire hard enough for riding, and then use the remaining air of the cartridge later again? Or does one have to put all the air into one tire in one shot?

Also, how do recycle the cartridges- just in the regular recycle with your tin cans?