My husband found this in his grandparents’ house. It looks like keys but doesn’t open any door in the house, and it’s quite old. What could it be?

wrench, it was made for a completely different purpose.

Many traditional adjustable roller skates had metal clamps or fittings that allowed the wearer to change the length of the skate to accommodate different shoe sizes. A specialized key helped turn or tighten the adjustment mechanism.

Some skate keys were simple, short metal tools with a hollow opening at one end. Others featured a distinctive

T-shaped handle, a flattened grip, or a shape designed to fit a particular skate model.

Because they were small and easy to lose, these keys were often kept in a pocket, stored with the skates, or