Try the Res-Q-Me from this dealer. I've bought tons of stuff from them and they have always been excellent.
Life Hammer & ResQMe. Check out the videos on their use too -
Res-Q-Me mini LifeHammer Scroll down towards bottom pf page.
NOTE the warning - WARNING: this tool will not break windshields or laminated glass, and some vehicle side windows are laminated. Res-Q-Me is a rescue tool. It is only for use in vehicular emergencies. It must not be used for any other purpose except for rescue. KEEP OUT OF REACH OF CHILDREN.
The pocket device (Res-Q-Me) is great on your key chain.
Just my 2 cents.
Chassol