JAY-PEE 911 Rescue Tool Cut Down Knife Seat Belt Cutter Rounded Stainless Steel Emergency Safety Hook Knife Foldable Compact for Corrections Prison Guards and First Responders

Its what we called a cut down hook when I worked in corrections. We had them to cut someone down in the case they attempted to off themselves via hanging. Might also be marketed as a rescue tool, rescue knife or seat belt cutter. They're designed to be able to cut something held against the body without cutting the person. https://a.co/d/0bYETvHb