1. Willie O'Connor is as hard as nails and Liam Simpson takes no prisoners.

2. The soldier was as hard as nails.

3. Those men are as hard as nails.

4. They are merciless, with hearts as hard as nails.

5. I wish I had your health; you look as hard as nails.

6. Anne was never happy. She as hard as nails to make smile.

7. She's as hard as nails, and draws blood if you get hold of the wrong end.

8. You'll never move him to kindness; he's as hard as nails.

9. He won't do you any harm. My stepmother might. She's ignorant, but she's as hard as nails.