10x weaker than the usual paper clip. Pretty much like thin copper wire. Most wheels I see are drilled for Schrader and have an insert for presta valves, And so the wheel toughness argument doesn’t hold up, and I’ve hardly ever experienced a challenge with a Schrader valve which happen https://expressbookmark.com/story19730414/how-much-you-need-to-expect-you-ll-pay-for-a-good-presta-addons