Review on 🔒 BEWISHOME 4 Pack Carabiner Hooks: Locking Solid Metal D Clips with Heavy Duty 500LBS Screw Gate for Hammocks, Outdoor Camping, Hiking, Traveling, Backpacking - Black & Silver by Klassic Duncan

These things are perfect for my purpose. I wanted a modular key fob because I have a house/apartment key ring, a car key ring, a motorcycle key ring, and a keychain sized card ring. Of course, I don't need car keys when I ride my bike, and I don't need one or the other when I go to class or anything. The whole idea was to have as few keys on you at all times as possible. I bought these to quickly change what I'm carrying and then clip what I'm carrying to my backpack. They are very durable and fit well. My only complaint is that the edge is quite sharp when open and can snag on fabric and other material (like the belt loop), which can be annoying if you tend to wear it over the belt loop. I adjusted by threading one through the strap on my backpack's shoulder and attaching a keychain to the one already attached to my backpack, thus avoiding constant dragging on the fabric.