World Of Preppers offers this Small but handy Pocket Tool. The Colombia River CRKT K.E.R.T./Key Ring Emergency Rescue Tool that is Designed to Cut Webbing & Fibrous Materials. It also Features a Oxygen Tank Opener, Screwdriver, Bottle Opener & 1/4″ Hex Wrench. Comes with a Vinyl Storage Sheath. Get one for your Keys today.