Trango - Piranha Knife
I saw this in a movie once. If anything goes wrong, we cut the rope... Seriously though, everyone needs a little knife and a way to carry it. The diminutive Piranha clips to a key ring or a carabiner so you can easily take it where you need to go. The blade is machined from surgical quality 440-C stainless with a serrated blade—just what you need to peel duct tape off your shoes or dig a splinter out of the palm of your hand.