I found this object at my grandparents’ old house. Could someone please explain to me what this is?

Roller Skating Through the Years
Roller skating has been enjoyed by both children and adults for a long time. Early versions of wheeled skating are linked to demonstrations in London in the 1700s, and later claims of invention in the 1760s.
Over time, skating moved from novelty to mainstream fun:
- 1935: Roller skating became a popular entertainment in the United States.
- 1970s: The trend grew even bigger when roller rinks added disco music, making skating a major social scene.
- During World War II, there was even an idea in the U.S. to use skates to help people travel and save gasoline, but it did not become reality.

The Heavy Skates Many People Remember
Many older skaters remember the classic roller skates that:
- Were heavy
- Strapped onto regular shoes
- Could be adjusted as feet grew
These skates often needed a small tool to keep them properly fitted and safe to use.
What Is That Metal Tool Skaters Wore Around Their Neck?
A small copper-colored metal object sometimes shared online is often mistaken for:
- A bottle opener
- A random tool
But it was actually something much more specific and important.

Skate Key
The object is a skate key—a must-have tool for roller skaters, especially before the 1970s.
What a Skate Key Was Used For
A skate key helped skaters adjust their skates, especially the older style skates worn with shoes:
- Tightening or loosening parts of the skate
- Adjusting the fit using the skate button (the mechanism that helped change sizing)
Why Skaters Wore It Around Their Neck
Because it was so easy to lose—and so necessary—many skaters:
- Attached the key to the skate (often at the back)
- Or wore it around their neck to keep it safe while skating
For many skaters, it was as important as the skates themselves—and it even became part of skating culture and memories.
