- 22838 480x800 robots, iron, dark
- 16699 480x800 green, iron, light
- 14484 480x800 metal, iron, wavy
- 13039 480x800 construction, iron, light
- 12872 480x800 gray, iron, stripes
- 11022 480x800 chain, iron, metal
- 10833 480x800 metal, iron, metallic
- 10181 480x800 lock, iron, closed
- 9566 480x800 metal, iron, rust
- 8992 480x800 metal, iron, waves
- 8630 480x800 surface, iron, metal
- 8440 480x800 bridge, iron, mountains
- 7462 480x800 chain, iron, texture
- 5659 480x800 dumbbells, iron, gym
- 3988 480x800 shape, iron, volume