The ultra compact and versatile Pair-Ring can be used to attach to a belt loop, backpack, or second key ring, keeping your keys secure and handy wherever you go.
The Pair-Ring provides easy one hand quick release of your keys and gear when needed.
-Brass - Nickel Plated key ring that allows easy access and removal of keys
-Carabiner clip allows secure attachment and easy release to most loops, straps, backpacks, or second key rings.
-Holds more than a dozen keys easily and securely
-Size: 2.75" x 1.6" x 0.12"
- weight : 4.7 Grams
These kind of hooks were used for the shower curtains onboard our beloved and "retired" (decommissioned) Connie (USS Constellation, CV-64).
I never thought that these kind of hooks would have had any other practical usage...