Which preposition to use with toughness

of Occurrences 17%

He told me that he called it the Hickory Pine, because of the whiteness and toughness of the wood.

between Occurrences 1%

After horse-radish has borne seed once or twice, its root becomes hard, brown on the outside, not juicy when it is scraped, and eats more like little chips than like a garden vegetable; so that, at taverns and eating-houses, there frequently seems to be a rivalship on the point of toughness between the horse-radish and the beef-steak; and it would be well if this inconvenient rivalship never discovered itself any where else.

for Occurrences 1%

They had ill-health some of them, they hadn't the requisite toughness for work, they even took to drink, or went to the bad.

Which preposition to use with  toughness