MSKS Safe Hammer Glass Breaker Car Window Breaker Car Safety Hammer Window Glass Breaker Portable Glass Breaker Seatbelt Cutter Keyring Emergency Escape Tool Car Escape Tool for Land and Underwater

Gives a lot of reassurance in the unlikely event of needing to break a window

Tried to use it on piece of glass that came with it and nothing happened.

Seems ok brought for emergency

So I stuck it on the dash and guess what? It fell off within an hour. I did eventually find some tape and stick it on a flat surface. I guess the proof is if I need it.

Everyone needs one of these!

Came off my door within a week

Very pleased. The item is as described and will hopefully do the job if required. But I hope I never have to use it. At least I have peace of mind for all my family who have them.

Thankfully Not Had To Use It As IntendedBut Had A Practice On The Piece Of Glass Provided And I Can Say It Worked In Breaking The GlassItem Doesn't Come With Instructions However You Don't Really Need Them Or Do What I Did And Use Google,Seems To Be Reasonable Put Together