Pros: This is a great little tool. I carry it at work and just clip it on to my belt. To remove it you just have to pull on the main body and it releases from the key ring, exposing the blade. I have popped two windows with it and it works so will you will get a chuckle out of it.

Cons: Unlike the hammer versions, this requires you to have your hand much closer to the glass. I highly recommend wearing gloves as it is easy to cut your hand if you are a bit too zealous. If gloves are not available or it is an exigent circumstance just remember that you only need to apply as much force as it takes for the spring to release the pin, and no more.

Overall Review: You can hit a car window with a bat or hammer and it won't break. Minimal pressure with this window punch pops the whole window out.

Pros: Great hard drive. I used it to replace the hd that died in my macbook. Plenty of room to breath and reasonably fast.

Cons: none

Overall Review: Installation was a cinch!