PLIERS-STYLE KEY EXTRACTOR with SAW TOOTH TIPS

Peterson's SAW-RBT can be used on a great many broken key scenarios, as the saw tooth pattern provides a very positive grip against key fragments and the design of the tool, much like a plier, gives you a lot of leverage -- so much so, in fact, that you have to use caution otherwise you could easily break the tips. 

With this model, the left hand jaw is raised when inserted into the lock, ensuring maximum grip on right-over-left key profiles -- see illustration:

Here is an idea of how the tip pattern looks: