How does a feather key look?

A feather key is a small, elongated piece of metal that resembles a feather in shape, typically with a flat, tapered end and a slightly curved body. It is often used in mechanical applications to secure rotating shafts and wheels. The design allows for easy insertion and removal, while providing a secure fit. Feather keys can vary in size and material, but they generally maintain the characteristic feather-like appearance.