The tower's roofline is trimmed with a curving row of metal fins.

Three large flexible metal fins are spaced evenly around its body.

These metal fins allow the fisherman to bend them so that the swim pattern can be modified.

Typically this is facilitated with metal fins covering the outside of the cylinders which increase the surface area that air can act on.

It was metallic, with metal fins, and overall had a look of speed, as if, when you touched it, you'd burn your fingers.

Convectors are usually tubes surrounded by thin metal fins.

A slim metal fin, rising above the box, helps stabilize the glass and provides support for window-cleaning equipment.

Below were three metal fins that also acted as legs for it to stand on.

The train on this type of coaster has metal fins mounted to its sides to facilitate launching.

After a while the connection of Kisa's fish's metal fin starts glowing.