For most applications a residential-grade door hinge will be sufficient for what you need. Residential-grade door hinges will be sufficient for solid-core doors and hollow-core doors up to 8-feet tall. There are three basic styles of door hinges: Square Corner, 1/4" Radius Corner, and 5/8" Radius Corner.
These instructions will assist you in reversing a Cosmas Entry Door Lever, including the Cosmas 50 Series and Cosmas 80 Series. Other Cosmas Entry Door Levers are symmetrical in design, and would not need to be reversed.
Replacing your door hinges is one of the easiest things you can do to update your home hardware. If you have recently replaced your outdated door knobs or doors levers (or plan to do so soon), you will definitely want to replace your door hinges so that all of your door hardware is in the same finish.