Here's the deal, the pump is less than $15.00 and it works, perfectly. This is for High Pressure tires like the 700C-32 on my Schwinn. which take 70 psi.. Position the pump carefully select the correct valve and a few pumps later your tire is good to go. It's not a difficult pump to use. It all about a comfortable position when your tires are mounted on your bike. A few full pumps and you are good to go.