The Colombia River CRKT K.E.R.T./Key Ring Emergency Rescue Tool is a nifty little tool that excels in cutting webbing, or fibrous materials, when needed. It features a screwdriver, oxygen tank opener, bottle opener and 1/4" hex wrench. This is a pocket sized tool that is designed to make your life easier, and perform necessary emergency tasks. The K.E.R.T. comes with a form fitted vinyl slip-sheath. Don't be caught unprepared, stay safe and put one on your keychain today.