Shackle

A U-shaped connector closed with a pin.

How to sign

Use Dominant curved-C: U-connector; opposite index: pin. The base or passive hand is Opposite hand provides the pin; both hands are active. Form a U-shaped connector with its opening visible. Hold index at the opening. Move the index across the opening, then turn it in a small securing rotation. Hold the connector closed by the pin. Form a U-shaped curved-C connector. Use the opposite index as a pin crossing its opening, then make a small turning motion to secure it.