The steel claws floating next to Metno will grab anything near it, dragging it closer so that Metno can bite it. They are connected through magnetic force, and if they latch onto a stronger Pokémon, Metno may be dragged around behind them.
They cannot see, so they tackle and bite to learn about their surroundings. The claws tipping its arms pack the destructive power to tear through thick iron sheets as if they were silk.