Item- Watch Tool

Brand- HR

Tool - Adjustable Pocket Watch Winding Key.

Length - 3"

The top of the Bench Key is 3.1 mm so the hole has to be that big.

The Square is .8 mm and larger.

Composition - Metal 

Condition- Very good used.

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Shipping - First Class or Priority Flat Rate inside the US. International is the US e-bay global shipping program.