I feel lost...

[newfsmith]

That's a Crank Bros. Speed Lever. http://www.crankbrothers.com/speedlever.php
Many shops carry them, or can order one. Most on-line sellers also carry them. I always carry one, you never know when you will ask someone if they need help on a ride, only to discover that this is what is needed. Also is good insurance on a long solo ride when your hands may be weaker than normal.

[BleeckerSt_Girl]

I use the Crank Bros. speed lever for the past several years as well. It's nice.
That said however....using your hands to get tires on and off is always preferable to using ANY lever- even the handy CrankBros speed lever can catch the tube and cause pinch flats.
The last few tires I've put off and on I was able to use just my hands, no levers at all. But sometimes a brand new tight tire can be a real bear to wrestle on and a lever is needed, especially to get that last bit back on.

Be careful when using any lever- they easily pinch the tube inside if you are too careless and cause tube damage which results in a flat either immediately upon pumping up or down the road a bit.

Here's my TE post recommending the Crank Bros. Speed Lever exactly 2 years ago in Nov 2006 :
http://forums.teamestrogen.com/showp...1&postcount=15
Nowadays I still use it, but only if the tire is too difficult to get on and off using just my hands.