This is the perfect emergency knife to have hanging off your harness or as part of your emergency kit. The locking blade can't open when it's on a carabiner.
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.
The locking blade can be opened and closed with one hand, but it's absolutely impossible to open when clipped to a normal carabiner (Watch out! You can wiggle the blade tip past the low profile of some ultra-light carabiners. Check this carefully before using.) Bottle opener included.