Here is another tactical carabiner designed to get you unstuck and last you a while. The RovyVon U4 Titanium Carabiner comes with a folding utility knife. It is rustproof and can withstand 110lbs of load.
The U4 keychain carabiner knife comes with a 4cm ruler and replaceable blade. The angle of rotating is from to 90 to 180 degrees.
[where to get it]